I have a simple html code as below
<input type="text" id="key" name="key">
<input type="text" id="value" name="value">
<button id="check">Check</button>
and I have related jQuery code as well
var keyArray = [];
var valueArray = [];
$("#check").click(function() {
var keyVal = $("#key").val();
var valueVal = $("#value").val();
keyArray.push(keyVal);
valueArray.push(valueVal);
console.log(keyArray);
console.log(valueArray);
for ($i = 0; $i < keyVal.length; $i++) {
//Need to add some code here to check
}
});
What I want is, whenever if someone click the Check button, it has to check if there is a similar item added before into the respective index of keyArray and valueArray. Eg: First I add 1 into the id key and 2 into the id value. If I add 1 and 2 into key and value fields a second time, it should prompt me such a pair already added.
How can I achieve this with JavaScript or jQuery?
var keyArray = [];
var valueArray = [];
$("#check").click(function() {
var keyVal = $("#key").val();
var valueVal = $("#value").val();
var exist=false;
if(keyArray.length>0){
for (i = 0; i < keyArray.length; i++) {
if(keyArray[i]==keyVal && valueArray[i]==valueVal)
{
console.log("pair exist");
exist=true;
break;
}
}
}
if(!exist)
{
keyArray.push(keyVal);
valueArray.push(valueVal);
}
});
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<input type="text" id="key" name="key">
<input type="text" id="value" name="value">
<button id="check">Check</button>
If you want, you can introduce a third array and store data in it, and compare it with your value.
var keyArray = [];
var valueArray = [];
var newArray = [];
$("#check").click(function() {
var keyVal = $("#key").val();
var valueVal = $("#value").val();
var isExist = false;
for (i = 0; i < newArray.length; i++) {
if(newArray[i].key == keyVal && newArray[i].value == valueVal ){
isExist = true;
break;
}
else{
isExist = false;
}
}
if (isExist){
alert("such a pair already added");
}
else{
keyArray.push(keyVal);
valueArray.push(valueVal);
newArray.push({ key : keyVal, value : valueVal });
}
console.log(keyVal);
console.log(valueVal);
console.log(newArray);
});
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<input type="text" id="key" name="key">
<input type="text" id="value" name="value">
<button id="check">Check</button>
Looking for the simplest implementation of the following problem:
I have a user input number field like:
<input type="number" id="numInput" name="numInput" value="1" onchange="myFunc()">
<div id="demo">*** TEST ***</div>
I want to replicate the #demo div based on the #numInput value entered by the user, e.g. if the user enters '5', there would be five #demo divs displayed on the page. At the moment, I'm using the following function:
function myFunc() {
var newArray = [];
var numInput = document.getElementById('numInput').value;
var x = document.getElementById('demo').innerHTML;
for(var i=0; i<numInput; i++) {
newArray.push(x);
}
document.getElementById('demo').innerHTML = newArray;
}
but this is adding to the existing array rather than outputting the exact number of divs based on user input. Please advise. Thanks.
There should not be multiple same id values.
function myFunc() {
let numInput = document.getElementById("numInput");
while (numInput.nextSibling) {
numInput.nextSibling.remove();
}
let numInputval = document.getElementById('numInput').value;
for(var i=numInputval; i>0; i--) {
var newDiv = document.createElement('div');
newDiv.setAttribute('id', 'demo' + i);
newDiv.innerHTML = '*** TEST ***';
numInput.parentNode.insertBefore(newDiv, numInput.nextSibling);
}
}
<input type="number" id="numInput" name="numInput" onchange="myFunc()">
+Edit
You can also manipulate <form> with javascript.
function myFunc() {
let numInput = document.getElementById("numInput");
while (numInput.nextSibling) {
numInput.nextSibling.remove();
}
let numInputval = document.getElementById('numInput').value;
for(var i=numInputval; i>0; i--) {
var newInput = document.createElement('input');
newInput.setAttribute('id', 'demoInput' + i);
newInput.setAttribute('type', 'text');
newInput.setAttribute('name', 'demoInputName' + i);
newInput.setAttribute('onchange', 'myFormChangeListener(this)');
numInput.parentNode.insertBefore(newInput, numInput.nextSibling);
numInput.parentNode.insertBefore(document.createElement('br'), numInput.nextSibling);
}
}
function myFormChangeListener(element) {
console.log(element);
console.log(element.value);
myForm.action = 'http://the.url/';
myForm.method = 'post';
console.log(myForm);
//myForm.submit;
}
<form id="myForm">
<input type="number" id="numInput" name="numInput" onchange="myFunc()">
</form>
I am trying to call a function in this javascript code. My code needs to check for whether the user selects var num, var letters and var symbols to be true or false. In the code, I preset the values but I still search the object choices for the variables that are true and push it into the array choices_made. However, since I need to randomly choose the order in which the num, letters and symbols appear, I randomly choose the class based on the Math.random(). However, it doesn't show me the alert(jumbled_result) afterwards.
http://jsfiddle.net/bdaxtv2g/1/
HTML
<input id="num" type="text" placeholder="Enter desired length">
<br/><br/>
<input id="press" type="button" value="jumble it up">
JS
$(document).ready(function(){
var fns={};
$('#press').click(function(){
var length = parseInt($('#num').val());
var num = true;
var letters = true;
var symbols = false;
gen(length, num, letters, symbols);
});
function gen(len, num, letters, sym){
var choices = {
1:num,
2:letters,
3:sym
};
var choice_made = ['0'];
var choice = 0;
var jumbled_result = '';
for(x in choices){
if(choices[x]==true){
choice_made.push(x);
}
}
for(i=0;i<len;i++){
var funName = 'choice';
choice = Math.round(Math.random() * (choice_made.length-1));
funName += choice_made[choice];
jumbled_result = fns[funName](jumbled_result);
}
alert(jumbled_result);
}
fns.choice0 = function choice0(jumbled_result){
var numbers = '0123456789';
return jumbled_result += numbers.charAt(Math.round(Math.random() * numbers.length));
}
fns.choice1 = function choice1(jumbled_result) {
var alpha = 'abcdefghijklmnopqrstuvwxyz';
return jumbled_result += alpha.charAt(Math.round(Math.random() * alpha.length));
}
});
You never declare functions within document.ready of jQuery. The functions should be declared during the first run(unless in special cases).
Here is a working code made out of your code. What I have done is just removed your functions out of document.ready event.
$(document).ready(function() {
$('#press').click(function() {
var length = parseInt($('#num').val());
var num = true;
var letters = true;
var symbols = false;
gen(length, num, letters, symbols);
});
});
var fns = {};
function gen(len, num, letters, sym) {
var choices = {
1: num,
2: letters,
3: sym
};
var choice_made = ['0'];
var choice = 0;
var jumbled_result = '';
for (x in choices) {
if (choices[x] == true) {
choice_made.push(x);
}
}
for (i = 0; i < len; i++) {
var funName = 'choice';
choice = Math.round(Math.random() * (choice_made.length - 1));
funName += choice_made[choice];
jumbled_result = fns[funName](jumbled_result);
}
alert(jumbled_result);
}
fns.choice0 = function choice0(jumbled_result) {
var numbers = '0123456789';
return jumbled_result += numbers.charAt(Math.round(Math.random() * numbers.length));
}
fns.choice1 = function choice1(jumbled_result) {
var alpha = 'abcdefghijklmnopqrstuvwxyz';
return jumbled_result += alpha.charAt(Math.round(Math.random() * alpha.length));
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<input id="num" type="text" placeholder="Enter desired length">
<br/>
<br/>
<input id="press" type="button" value="jumble it up">
Its because of the way the object choices have been intitialized.. Try this..
var choices = {
0:num,
1:letters,
2:sym
};
And also
var choice_made = [];
JS fiddle link : http://jsfiddle.net/8dw7nvr7/2/
Hi so i got a very basic JavaScript HTML quiz working, however what i want to end up with is an assessment type quiz that has lets say 15 questions based on 3 categories (e.g. Alcoholism, depression, drug abuse) e.g.
How often to you drink alcohol?
- All the time
- Occasionally
- Never
the player answers all 15 questions and at the end depending on how they answered the questions they get assigned a category e.g. your category is Drug Abuse etc.
I'm thinking that maybe each category has its own counter and a value is applied to each of the possible answers e.g. All the time gives a score of 3, occasionally scores a 2 etc. As the player answers the questions, the values get stored in the corresponding category and at the end the scores for each category are added up and the category with the highest score gets assigned to the player?
Any help with this would be appreciated :)
HTML:
<!DOCTYPE html>
<html>
<head>
</head>
<body>
<h2 id="test_status"></h2>
<div id="test"></div>
</body>
</html>
CSS:
<style>
div#test {
border:#000 1px solid;
padding: 10px 40px 40px 40px;
}
</style>
JS:
<script>
var pos = 0, test, test_status, question, choice, choices, chA, chB, chC, correct = 0;
var questions = [
["How often do you drink?", "All the time", "Often", "Never", "B"],
["Do you ever feel sad for no reason?", "All the time", "Often", "Never", "C"],
["Have you ever tried drugs", "All the time", "Often", "Never", "C"],
["Do you feel uneasy around people", "All the time", "Often", "Never", "C"]
];
function _(x) {
return document.getElementById(x);
}
function renderQuestion () {
test = _("test");
if(pos >= questions.length) {
test.innerHTML = "<h2>Your Category is </h2>";
_("test_status").innerHTML = "Test Completed";
pos = 0;
correct = 0;
return false;
}
_("test_status").innerHTML = "Question "+(pos+1)+" of"+questions.length;
question = questions[pos] [0];
chA = questions[pos] [1];
chB = questions[pos] [2];
chC = questions[pos] [3];
test.innerHTML = "<h3>"+question+"</h3>";
test.innerHTML += "<input type='radio' name='choices' value='A'> "+chA+"<br>";
test.innerHTML += "<input type='radio' name='choices' value='B'> "+chB+"<br>";
test.innerHTML += "<input type='radio' name='choices' value='C'> "+chC+"<br><br>";
test.innerHTML +="<button onclick='checkAnswer()'>submit Answer</button>";
}
function checkAnswer() {
choices = document.getElementsByName("choices");
for (var i=0; i<choices.length; i++) {
if(choices[i].checked) {
choice = choices[i].value;
}
}
if(choice == questions[pos] [4]) {
correct++;
}
pos++;
renderQuestion();
}
window.addEventListener("load", renderQuestion, false);
</script>
The executable Javascript snippet its generated by TypeScript(a public GIT repository is available on this bucket), The quiz its organized by arguments and categories; below you can see the UML diagram.
var __extends = this.__extends || function (d, b) {
for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p];
function __() { this.constructor = d; }
__.prototype = b.prototype;
d.prototype = new __();
};
var Categories;
(function (Categories) {
var QuestionCategory = (function () {
function QuestionCategory(value) {
this.Value = value;
}
return QuestionCategory;
})();
Categories.QuestionCategory = QuestionCategory;
var AQuestionCategory = (function (_super) {
__extends(AQuestionCategory, _super);
function AQuestionCategory() {
_super.call(this, 1);
}
return AQuestionCategory;
})(QuestionCategory);
Categories.AQuestionCategory = AQuestionCategory;
var BQuestionCategory = (function (_super) {
__extends(BQuestionCategory, _super);
function BQuestionCategory() {
_super.call(this, 2);
}
return BQuestionCategory;
})(QuestionCategory);
Categories.BQuestionCategory = BQuestionCategory;
var CQuestionCategory = (function (_super) {
__extends(CQuestionCategory, _super);
function CQuestionCategory() {
_super.call(this, 3);
}
return CQuestionCategory;
})(QuestionCategory);
Categories.CQuestionCategory = CQuestionCategory;
})(Categories || (Categories = {}));
var Questions;
(function (Questions) {
var Answer = (function () {
function Answer(text, value) {
this.Text = text;
this.Value = value;
}
return Answer;
})();
Questions.Answer = Answer;
var Question = (function () {
function Question(text, id, category, answers) {
this.Text = text;
this.ID = id;
this.Category = category;
this.Answers = answers;
}
Question.prototype.Render = function () {
var _this = this;
var dContainer = document.createElement("div");
var dQuestion = document.createElement("h3");
dQuestion.innerHTML = this.Text;
dContainer.appendChild(dQuestion);
var dCategory = document.createElement("div");
dCategory.innerHTML = 'Category: ' + this.Category.Value;
dContainer.appendChild(dCategory);
dContainer.appendChild(document.createElement("br"));
var counter = 0;
this.Answers.forEach(function (a) {
var __id = _this.ID + counter;
var dRadio = document.createElement("input");
dRadio.setAttribute('type', 'radio');
dRadio.setAttribute('id', __id);
dRadio.setAttribute('data-category', _this.Category.Value + '');
dRadio.setAttribute('value', a.Value + '');
dRadio.setAttribute('name', _this.ID);
var dLabel = document.createElement("label");
dLabel.innerHTML = a.Text;
dLabel.setAttribute('For', __id);
dContainer.appendChild(dRadio);
dContainer.appendChild(dLabel);
counter++;
});
dContainer.appendChild(document.createElement("hr"));
return dContainer;
};
return Question;
})();
Questions.Question = Question;
var QuestionCollection = (function () {
function QuestionCollection(questions) {
this.Questions = questions;
}
QuestionCollection.prototype.Render = function () {
var div = document.createElement("div");
this.Questions.forEach(function (q) {
div.appendChild(q.Render());
});
return div;
};
return QuestionCollection;
})();
Questions.QuestionCollection = QuestionCollection;
var QuestionArgument = (function () {
function QuestionArgument(name, collection) {
this.Collection = collection;
this.Name = name;
}
QuestionArgument.prototype.Render = function () {
var div = document.createElement("div");
var h1Arg = document.createElement("h1");
h1Arg.innerHTML = this.Name;
div.appendChild(h1Arg);
div.appendChild(document.createElement("hr"));
div.appendChild(this.Collection.Render());
return div;
};
return QuestionArgument;
})();
Questions.QuestionArgument = QuestionArgument;
var QuizManager = (function () {
function QuizManager(hook, arguments) {
this.Arguments = arguments;
this.Hook = hook;
}
QuizManager.prototype.Render = function () {
var _this = this;
this.Arguments.forEach(function (arg) {
_this.Hook.appendChild(arg.Render());
});
var btn = document.createElement('input');
btn.setAttribute('type', 'button');
btn.setAttribute('value', 'Done');
btn.onclick = function (e) {
_this.Compute();
};
this.Hook.appendChild(btn);
};
QuizManager.prototype.Compute = function () {
var _this = this;
var cats = [], dxCat = [], dxCatTotValue = [];
this.Arguments.forEach(function (arg) {
arg.Collection.Questions.forEach(function (q) {
if (cats.length > 0) {
if (cats.indexOf(q.Category) === -1)
cats.push(q.Category);
}
else
cats.push(q.Category);
});
});
cats.forEach(function (c) {
var p = document.querySelectorAll('input[data-category =\'' + c.Value + '\']:checked');
var tv = 0;
for (var i = 0; i < p.length; i++) {
if (parseInt(p[i]['value']) != NaN)
tv += parseInt(p[i]['value']);
}
dxCatTotValue.push({ "Cat": c.Value, "TVal": tv });
});
this.Hook.appendChild(document.createElement("hr"));
var summariH2 = document.createElement("h2");
summariH2.innerHTML = 'Summary';
dxCatTotValue.sort(this.Compare);
dxCatTotValue.forEach(function (catValue) {
var entryDiv = document.createElement("div");
entryDiv.innerHTML = 'Category ' + catValue['Cat'] + ': ' + catValue['TVal'];
_this.Hook.appendChild(entryDiv);
});
this.Hook.appendChild(document.createElement("hr"));
};
QuizManager.prototype.Compare = function (a, b) {
if (a['TVal'] > b['TVal'])
return -1;
if (a['TVal'] < b['TVal'])
return 1;
return 0;
};
return QuizManager;
})();
Questions.QuizManager = QuizManager;
})(Questions || (Questions = {}));
window.onload = function () {
var CCat = new Categories.CQuestionCategory();
var BCat = new Categories.BQuestionCategory();
var ACat = new Categories.AQuestionCategory();
var q1 = new Questions.Question('Do you eat Apples?', 'q1', CCat, [new Questions.Answer('All the time', 1), new Questions.Answer('Occasionally', 2), , new Questions.Answer('Never', 3)]);
var q2 = new Questions.Question('Do you like Pears?', 'q2', BCat, [new Questions.Answer('Yes', 1), new Questions.Answer('No', 2)]);
var fruitsquestions = new Questions.QuestionCollection([q1, q2]);
var fruitsArguments = new Questions.QuestionArgument('Fruits', fruitsquestions);
var q3 = new Questions.Question('Do you eat Onions?', 'q3', ACat, [new Questions.Answer('Yes', 1), new Questions.Answer('No', 2)]);
var q4 = new Questions.Question('Do you like Cucumbers?', 'q4', CCat, [new Questions.Answer('All the time', 1), new Questions.Answer('Occasionally', 2), , new Questions.Answer('Never', 3)]);
var vegetablesQuestions = new Questions.QuestionCollection([q3, q4]);
var vegetablesArguments = new Questions.QuestionArgument('Vegetables', vegetablesQuestions);
var quiz = new Questions.QuizManager(document.getElementById("content"), [fruitsArguments, vegetablesArguments]);
quiz.Render();
};
<div id="content"></div>
The TypeScript source:
module Categories {
export class QuestionCategory {
Value: number;
Text: string;
constructor(value: number) { this.Value = value; }
}
export class AQuestionCategory extends QuestionCategory {
constructor() { super(1); }
}
export class BQuestionCategory extends QuestionCategory {
constructor() { super(2); }
}
export class CQuestionCategory extends QuestionCategory {
constructor() { super(3); }
}
}
module Questions {
import QC = Categories;
export class Answer {
Text: string;
Value: number;
constructor(text: string, value: number) {
this.Text = text;
this.Value = value;
}
}
export class Question {
Category: QC.QuestionCategory;
Answers: Answer[];
Text: string;
ID: string;
constructor(text: string, id: string, category: QC.QuestionCategory, answers: Answer[]) {
this.Text = text;
this.ID = id;
this.Category = category;
this.Answers = answers;
}
Render(): HTMLElement {
var dContainer = document.createElement("div");
var dQuestion = document.createElement("h3")
dQuestion.innerHTML = this.Text;
dContainer.appendChild(dQuestion);
var dCategory = document.createElement("div")
dCategory.innerHTML = 'Category: ' + this.Category.Value;
dContainer.appendChild(dCategory);
dContainer.appendChild(document.createElement("br"));
var counter = 0;
this.Answers.forEach(a => {
var __id = this.ID + counter;
var dRadio = document.createElement("input");
dRadio.setAttribute('type', 'radio');
dRadio.setAttribute('id', __id);
dRadio.setAttribute('data-category', this.Category.Value + '');
dRadio.setAttribute('value', a.Value + '');
dRadio.setAttribute('name', this.ID);
var dLabel = document.createElement("label");
dLabel.innerHTML = a.Text
dLabel.setAttribute('For', __id)
dContainer.appendChild(dRadio);
dContainer.appendChild(dLabel);
counter++;
});
dContainer.appendChild(document.createElement("hr"));
return dContainer;
}
}
export class QuestionCollection {
Questions: Question[];
constructor(questions: Question[]) { this.Questions = questions; }
Render(): HTMLElement {
var div = document.createElement("div");
this.Questions.forEach(q => {
div.appendChild(q.Render());
});
return div;
}
}
export class QuestionArgument {
Name: string;
Collection: QuestionCollection;
constructor(name: string, collection: QuestionCollection) {
this.Collection = collection;
this.Name = name;
}
Render(): HTMLElement {
var div = document.createElement("div");
var h1Arg = document.createElement("h1");
h1Arg.innerHTML = this.Name;
div.appendChild(h1Arg);
div.appendChild(document.createElement("hr"));
div.appendChild(this.Collection.Render());
return div;
}
}
export class QuizManager {
Hook: HTMLElement;
Arguments: QuestionArgument[];
constructor(hook: HTMLElement, arguments: QuestionArgument[]) {
this.Arguments = arguments;
this.Hook = hook;
}
Render() {
this.Arguments.forEach(arg => {
this.Hook.appendChild(arg.Render());
});
var btn = <HTMLButtonElement> document.createElement('input');
btn.setAttribute('type', 'button');
btn.setAttribute('value', 'Done');
btn.onclick = (e) => { this.Compute(); }
this.Hook.appendChild(btn);
}
Compute() {
var cats = [], dxCat = [], dxCatTotValue = [];
this.Arguments.forEach(arg => {
arg.Collection.Questions.forEach(q => {
if (cats.length > 0) {
if (cats.indexOf(q.Category) === -1)
cats.push(q.Category);
}
else
cats.push(q.Category);
});
});
cats.forEach(c => {
var p = document.querySelectorAll('input[data-category =\'' + c.Value + '\']:checked');
var tv = 0;
for (var i = 0; i < p.length; i++)
{
if (parseInt(p[i]['value']) != NaN)
tv += parseInt(p[i]['value']);
}
dxCatTotValue.push({ "Cat": c.Value, "TVal": tv });
})
//this.Hook.appendChild(btn);
this.Hook.appendChild(document.createElement("hr"));
var summariH2 = document.createElement("h2");
summariH2.innerHTML = 'Summary';
dxCatTotValue.sort(this.Compare);
dxCatTotValue.forEach(catValue => {
var entryDiv = document.createElement("div");
entryDiv.innerHTML = 'Category ' + catValue['Cat'] + ': ' + catValue['TVal'];
this.Hook.appendChild(entryDiv);
});
this.Hook.appendChild(document.createElement("hr"));
}
Compare(a, b) {
if (a['TVal'] > b['TVal'])
return -1;
if (a['TVal'] < b['TVal'])
return 1;
return 0;
}
}
}
window.onload = () => {
var CCat = new Categories.CQuestionCategory();
var BCat = new Categories.BQuestionCategory();
var ACat = new Categories.AQuestionCategory();
var q1 = new Questions.Question('Do you eat Apples?', 'q1',
CCat,
[new Questions.Answer('All the time', 1), new Questions.Answer('Occasionally', 2), , new Questions.Answer('Never', 3)]);
var q2 = new Questions.Question('Do you like Pears?', 'q2',
BCat,
[new Questions.Answer('Yes', 1), new Questions.Answer('No', 2)]);
var fruitsquestions = new Questions.QuestionCollection([q1, q2]);
var fruitsArguments = new Questions.QuestionArgument('Fruits', fruitsquestions);
var q3 = new Questions.Question('Do you eat Onions?', 'q3',
ACat,
[new Questions.Answer('Yes', 1), new Questions.Answer('No', 2)]);
var q4 = new Questions.Question('Do you like Cucumbers?', 'q4',
CCat,
[new Questions.Answer('All the time', 1), new Questions.Answer('Occasionally', 2), , new Questions.Answer('Never', 3)]);
var vegetablesQuestions = new Questions.QuestionCollection([q3, q4]);
var vegetablesArguments = new Questions.QuestionArgument('Vegetables', vegetablesQuestions);
var quiz = new Questions.QuizManager(document.getElementById("content"), [fruitsArguments, vegetablesArguments]);
quiz.Render();
};
this quiz maker produces a very simple set of HTML and it's obvious where the total calculation is in order to change it.
You can simply add the numbers of questions relating to each answer, then compare to say which is largest and display the result. It gives you a choice of having radio buttons in a list for each question, or several on one line.
All the questions will display on a single page, rather than having to press Next each time which can be annoying for people doing the quiz. No CSS is needed and hardly any javascript.
Example code for a self-scoring quiz with 1 question of each type (drop-down box, short answer, multiple answers etc). The generator tool in the link above will create something similar, it's pure HTML and javascript with no external scripts to load, no jquery or dependencies.
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional/EN" "http://www.w3.org/TR/html4/loose.dtd">
<html><head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<link rel="stylesheet" href="../../dkj.css" type="text/css">
<title>Quiz: Sample "Think Again" Quiz</title>
<script type="text/javascript">
<!--
var stuff = new Array (51) // maximum number of questions
var answered = new Array (51) // processing inhibitor for guessers
for(var i = 0; i<=50; i++){stuff[i]=0; answered[i]=0} //initialize arrays// --> </script>
</head>
<body bgcolor ="#ffff88" text="#000000" link="#000088" vlink="purple" alink="#880000" >
<a name="top"></a>
<p align='right'><font size=-1>
Quiz created: 1999/1/31
</font></p>
<center>
<h2><font color="#ff3333">Sample "Think Again" Quiz</font></h2></center>
<noscript>
<p><font color="#880000">
I'm sorry. This page requires that your browser be capable of running JavaScript in order to use the self-correcting feature of the quiz.
In most browsers you can activate JavaScript using a dialog box somewhere under one of the menu bar options. If you are really using a (rare) non-JavaScript-capable browser, you will have to do without the self-grading features of this page.</font></p>
</noscript>
<p>
<b>Instructions: </b>
Answer the multiple choice questions, guessing if necessary,
then click on the "Process Questions" button to see your
score. The program will not reveal which questions you got wrong, only how
many points you have. Go back and change your answers until you get them all
right. (The message box will rejoice at that point and the page will change color in delight.)</p>
<p>
<b>Points to note: </b>
(1) Questions with only one possible answer are one point each.
(2) Questions with <i>one or more</i> possible answers (represented by check boxes)
give a point for each correct answer, but also subtract a point for each wrong answer!
(3) The program will not attempt to score your efforts at all if
you have not tried at least half of the questions.
(4) This practice quiz is for your own use only.
No record of your progress is kept or reported to anyone. </p>
<hr>
<form name="formzSampQuiz">
1. Fog is notorious in
<blockquote>
<input type=radio name=quest1 onClick="stuff[1]=0; answered[1]=1">New York
<input type=radio name=quest1 onClick="stuff[1]=0; answered[1]=1">Chicago
<input type=radio name=quest1 onClick="stuff[1]=1; answered[1]=1">London
<input type=radio name=quest1 onClick="stuff[1]=0; answered[1]=1">Los Angeles
<input type=radio name=quest1 checked onClick="stuff[1]=0; answered[1]=0">No Answer </blockquote>
2. Chicago is in
<blockquote>
<input type=radio name=quest2 onClick="stuff[2]=0; answered[2]=1">Montana
<input type=radio name=quest2 onClick="stuff[2]=0; answered[2]=1">Manitoba
<input type=radio name=quest2 onClick="stuff[2]=0; answered[2]=1">Missouri
<input type=radio name=quest2 onClick="stuff[2]=1; answered[2]=1">Illinois
<input type=radio name=quest2 checked onClick="stuff[2]=0; answered[2]=0">No Answer </blockquote>
3. The famous French Queen Marie Antoinette was married to
<blockquote>
<select name=quest3 size=1 onChange="figureout3()"><option selected>No Answer <option>St. Louis
<option>Louis XVI
<option>Louis DXLVIII
<option>Louis Rukeyser
<option>Louey, brother of Dewey and and Huey
<option>John L. Louis
</select>
<script type="text/javascript"><!-- //Pre-processor for question 3";
function figureout3() {
if (document.formzSampQuiz.quest3.options.selectedIndex == 0)
{stuff[3] = 0; answered[3]=0} // no answer
else if (document.formzSampQuiz.quest3.options.selectedIndex == 2)
{stuff[3] = 1; answered[3]=1} // right answer
else {stuff[3] = 0; answered[3]=1} // wrong answer
} // end function figureout3()
//--></script>
</blockquote>
4. Compared with Elizabeth II, Elizabeth I was
<blockquote>
<input type=radio name=quest4 onClick="stuff[4]=1; answered[4]=1">earlier
<input type=radio name=quest4 onClick="stuff[4]=0; answered[4]=1">later
<input type=radio name=quest4 checked onClick="stuff[4]=0; answered[4]=0">No Answer </blockquote>
5. Which of the Following are saints?
<blockquote>
<script type="text/javascript">
<!-- //Script to pre-process question 5
function figureout5() {
stuff[5]=0; answered[5]=0
if(document.formzSampQuiz.q5p2.checked==true){stuff[5]--; answered[5]=1}
if(document.formzSampQuiz.q5p3.checked==true){stuff[5]++; answered[5]=1}
if(document.formzSampQuiz.q5p4.checked==true){stuff[5]++; answered[5]=1}
if(document.formzSampQuiz.q5p5.checked==true){stuff[5]--; answered[5]=1}
if(document.formzSampQuiz.q5p6.checked==true){stuff[5]--; answered[5]=1}
} //end function figure5
// --></script>
<input type=checkbox name="q5p2" onClick="figureout5()">
Jack-the-Ripper
<input type=checkbox name="q5p3" onClick="figureout5()">
St. Augustine
<input type=checkbox name="q5p4" onClick="figureout5()">
St. Ursula
<input type=checkbox name="q5p5" onClick="figureout5()">
Adolf Hitler
<input type=checkbox name="q5p6" onClick="figureout5()">
Napoleon
</blockquote>
6. Which of the following is <i>not</i> one of the Seven Deadly Sins?
<blockquote>
<select name=quest6 size=1 onChange="figureout6()"><option selected>No Answer <option>pride
<option>lust
<option>envy
<option>stupidity
<option>anger
<option>covetousness
<option>gluttony
<option>sloth
</select>
<script type="text/javascript"><!-- //Pre-processor for question 6";
function figureout6() {
if (document.formzSampQuiz.quest6.options.selectedIndex == 0)
{stuff[6] = 0; answered[6]=0} // no answer
else if (document.formzSampQuiz.quest6.options.selectedIndex == 4)
{stuff[6] = 1; answered[6]=1} // right answer
else {stuff[6] = 0; answered[6]=1} // wrong answer
} // end function figureout6()
//--></script>
</blockquote>
<script type="text/javascript"><!--// Processor for questions 1-6>
function processqzSampQuiz() {
document.bgColor='#ffff88'
var goodguyszSampQuiz=0 // used to calculate score
var inhibitzSampQuiz=0 // used to prevent processing of partially completed forms
for (var i=1; i<=6; i++){
goodguyszSampQuiz=goodguyszSampQuiz + stuff[i]; inhibitzSampQuiz = inhibitzSampQuiz + answered[i];
} // end for
// Prevent display of score if too few questions completed
if (inhibitzSampQuiz < 3){
document.formzSampQuiz.grade.value="You must try at least 3!"
document.formzSampQuiz.score.value= "Secret!";
} // end if
else {
document.formzSampQuiz.score.value=goodguyszSampQuiz;
if (goodguyszSampQuiz==7){
document.formzSampQuiz.grade.value="Hooray!"
document.bgColor="#ff9999"
}else {document.formzSampQuiz.grade.value="Keep Trying!"}
} // end else
} // end function processqzSampQuiz()
function killall(){ //keep final scores from hanging around after reset clears form
goodguys=0; inhibitaa=0;
for (i=0; i<=50; i++){stuff[i]=0; answered[i]=0}
} // end functionl killall()
// --> </script>
<input type=button name=processor value="Process Questions" onClick=processqzSampQuiz()> <input type=reset value="Reset" onClick="killall(); document.bgColor='#ffff88'">
<input type=text name="grade" value="Nothing!" size=25 onFocus="blur()">
Points out of 7:
<input type=text name="score" value="Zip!" size=10 onFocus="blur()">
<br></form>
<p align='right'><font size=-1>
Return to top.</font></p>
<hr>
<!-- You can edit this acknowledgement out if you like. -->
<p align='right'><font size=-1>
This consummately cool, pedagogically compelling, self-correcting, <br>
multiple-choice quiz was produced automatically from <br>
a text file of questions using D.K. Jordan's<br>
<a href="http://anthro.ucsd.edu/~dkjordan/resources/quizzes/quizzes.html">
Think Again Quiz Maker</a> <br>
of October 31, 1998.<br>
</font></p>
</body></html>
First I'd like to say that i'm a very new beginner when it comes to java script with no other skills involved. I seem to be a little lost in my coding. I have two sets of options with three choices within each. Each choice has its own price. How do I calculate a total price?
JavaScript (included in HEAD)
var theForm = document.forms["pizzaOrder"];
var pizza_price = new Array();
pizza_price["meatLover"] = 15.50;
pizza_price["veggieLover"] = 12.50;
pizza_price["supreme"] = 20.00;
function getPizzaPrice() {
var pizzaPrice = 0;
var theForm = document.forms["pizzaOrder"]; //You already declared "theForm" at global scope - no need to redeclare it here to hold the same reference -crush
var pizzaType = theForms.elements["pizzaType"]; //Mispelled "theForm" here -crush
for(var i = 0; i < pizzaType.length; i++) {
if(pizzaType[i].checked) {
pizzaPrice = pizza_price[pizzaPrice[i].value];
break;
}
}
return pizzaPrice;
}
var extra_top = new Array()
extraTop["extraChees"] = 1.00;
extraTop["mushrooms"] = 1.10;
extraTop["anchovies"]-1.25; //Obvious syntax error here -crush
function getToppingPrice() {
var toppingPrice=0;
var theForm = document.forms["pizzaOrder"];
var extraTop = theForm.elements["extraTop"] //You forgot the semi-colon here -crush
for(var i = 0; i < extraTop.length; i++) {
if(extraTop[i].checked) {
toppingPrice = extra_top[extraTop.value];
break;
}
}
return toppingPrice;
}
function getTotal() //You're missing an opening bracket here -crush
var pizzaPrice = getPizzaPrice() + getToppingPrice();
document.getElementbyId('totalPrice').innerHTML = "Total Price for Pizza is $" + pizzaPrice;
//You're missing a closing bracket here -crush
HTML
<body onload="hideTotal">
<h1>Pizza To Go</h1>
<h2>Order Online</h2>
<form action="" id="PizzaOrder" onsubmit="return false;">
<p>Select Your Pizza!<br />
<input type="radio" name="pizzaType" value="meatLover" onclick="calculateTotal()"/> Meat Lover $12.50<br />
<input type="radio" name="pizzaType" value="veggieLover" onclick="calculateTotal()"/> Veggie Lover $12.50<br />
<input type="radio" name="pizzaType" value="supreme" onclick="calculateTotal()"/> Supreme $12.50<br />
<p>Add Extra Toppings!<br />
<input type="checkbox" name="extraTop" value="extraCheese" onclick="calculateTotal()"/> Extra Cheese $1<br />
<input type="checkbox" name="extraTop" value="mushrooms" onclick="calculateTotal()"/> Mushrooms $1.10<br />
<input type="checkbox" name="extraTop" value="anchovies" onclick="calculateTotal()"/> Anchovies $1.25<br />
</form>
</body>
I'm currently lost as it just doesnt seem to work. Any help is much appreciated.
Your code could stand to be cleaned up quite a bit in general, but your functional issue is that you should be using an object instead of arrays to hold your item prices. Cleanup notwithstanding, try something like this:
var pizza_price = {
"meatLover": 15.50,
"veggieLover": 12.50,
"supreme": 20.00
};
var extra_top = {
"extraChees": 1.00,
"mushrooms": 1.10,
"anchovies": -1.25
};
function getPizzaPrice() {
var pizzaPrice=0;
var theForm = document.forms["pizzaOrder"];
var pizzaType = theForms.elements["pizzaType"];
for(var i = 0; i < pizzaType.length; i++) {
if(pizzaType[i].checked) {
pizzaPrice += pizza_price[pizzaPrice[i].value];
}
}
return pizzaPrice;
}
function getToppingPrice() {
var toppingPrice=0;
var theForm = document.forms["pizzaOrder"];
var extraTop = theForm.elements["extraTop"];
for(var i = 0; i < extraTop.length; i++) {
if(extraTop[i].checked) {
toppingPrice += extra_top[extraTop[i].value];
}
}
return toppingPrice;
}
function getTotal() { return getPizzaPrice() + getToppingPrice(); }
If you want to create a jsfiddle I'll take a closer look.