I am trying to make a little quiz to study.
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Quiz</title>
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.10.2/jquery.min.js">
</script>
</head>
<body>
<div id="question"></div>
<form>
<input type="text" id="answer">
<button onClick="check()">Check</button>
</form>
<script>
var spanish = new Array("Hola", "Sí", "No");
var english = new Array("Hello", "Yes", "No");
var x = Math.floor(Math.random()*3);
document.getElementById("question").innerHTML = english[x];
var attempt = document.getElementById("answer");
var correct = spanish[x];
function check(){
if(attempt == correct){
alert("Correct");
}else{
alert("Fail");
};
};
</script>
</body>
</html>
It is returning Fail no matter if I am right or not. Do you know how to fix this? I looked around but could not figure out what is wrong. Thanks.
You need to check for attempt upon clicking the button. You're currently checking it on page load (so it's always an empty string, which is causing correct == attempt to be false). Also, you need to grab the value, not the element.
So, change your function to:
function check() {
var attempt = document.getElementById("answer").value;
if (attempt == correct) {
alert("Correct");
} else {
alert("Fail");
};
};
See here: http://jsfiddle.net/ykZHa/
Related
this is part of my code:
Degree:
<script>
function F2(){
var y = document.getElementById("dd");
if (y>=73){
window.alert("Your degree is less then required");
}
}
</script>
it's in a form,
i hope someone help me in my code.
You forgot to add .value at "y" initialization so you are assigning not value of input field, but the whole field
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>test</title>
</head>
<body>
<button onclick="F2();">Button</button>
<input id="dd">
</body>
<script>
function F2()
{
var y = document.getElementById("dd").value;
if (y >= 73)
{
window.alert("Your degree is less then required");
}
}
</script>
</html>
I am trying to write an HTML5 - JS Program that displays an Error Message IF the User Input is Empty. But I am not able to get the "Error Message", even thou I can't seem to find any issues.
I am a complete beginner and the Video Tutorial I am using doesn't have any User Support.
Please Help.
I have tried all I know but no avail.
<!DOCTYPE html>
<html>
<head>
<title>Error Message Display</title>
<script type="text/javascript">
function displayInput()
{
var testInput = document.getElementById("name").value;
if (testInput.lenght == 0)
{
document.getElementById("para").innerHTML = "NOOOO";
}else
document.getElementById("para").innerHTML = testInput;
}
</script>
</head>
<body>
<input id="name" type="text"/>
<button onclick="displayInput();">Show The Text</button>
<p6 id="para"></p6>
</body>
</html>
If the Input is Empty an Error Message i.e NOOOO should display.
hi you made spelling mistake in length property of element
it should not be lenght
function displayInput()
{
let el = document.getElementById("name");
let para = document.getElementById("para")
var testInput = el.value;
if (testInput.length == 0)
{
para.innerHTML = "NOOOO";
}
else{
para.innerHTML = testInput;
}
}
<!DOCTYPE html>
<html>
<head>
<title>Error Message Display</title>
</head>
<body>
<input id="name" type="text"/>
<button onclick="displayInput();">Show The Text</button>
<p6 id="para"></p6>
I am having a problem in my code, I made a very simple newbie type captcha using Javascript the following is the my code.
<!DOCTYPE html>
<html>
<head>
<style>
</style>
</head>
<body>
<h1>Testing captcha</h1>
<hr>
<img id="firstImage" img src="pictureOne.jpg">
<input type="text" id="firstInput"></input>
<button type="button" onclick="checker()">Confirm</button>
<hr>
<p id="cone">Please type what you see in this picture, This is a captcha to prevent over-spamming</p>
</body>
<script>
function checker() {
var checkPic = document.getElementById('firstImage').src = 'pictureOne.jpg'
var takePic = document.getElementById('firstInput').value;
checkPic.toString()
if (checkPic === "pictureOne" && takePic === 'c' ) {
document.getElementById('firstImage').src = 'pictureTwo.jpg';
alert("Please confirm the second captcha");
} else if (checkPic === 'pictureTwo.jpg' && takePic === 'u') {
alert("Ready to download.")
}
}
</script>
</html>
How the captcha will work? Well i tried to make it simple, just like on completing the first captcha the second image will appear and then after finishing that captcha a certain task will be shown. The issue is that the code is not working. I don't know if my condition statements have problem or what so ever please help me. I am stuck in this like for 7 hours.
you have several problems in you code. I first try to fix this problems.
remove unused attribute img from <img id="firstImage" img src="pictureOne.jpg">
remove = 'pictureOne.jpg' from var checkPic = document.getElementById('firstImage').src = 'pictureOne.jpg' to get the real content of element #firstImage instead of setting it every time to pictureOne.jpg
remove line checkPic.toString(). Its not needed (and missing a ; at the end)
use == instead of === because === will test if both sides are the same thing and not only equal. Example: define i=5 and x=5 --> i==x is true but i===x is false and i===i is true
use .endsWith(" to compare your image locations because they will start with http://xyz.abc/ and you only have to check the end
<!DOCTYPE html>
<html>
<head>
<style>
</style>
</head>
<body>
<h1>Testing captcha</h1>
<hr>
<img id="firstImage" src="pictureOne.jpg">
<input type="text" id="firstInput"></input>
<button type="button" onclick="checker()">Confirm</button>
<hr>
<p id="cone">Please type what you see in this picture, This is a captcha to prevent over-spamming</p>
</body>
<script>
function checker() {
var checkPic = document.getElementById('firstImage').src;
var takePic = document.getElementById('firstInput').value;
if (checkPic.endsWith("pictureOne.jpg") && takePic == 'c' ) {
document.getElementById('firstImage').src = 'pictureTwo.jpg';
alert("Please confirm the second captcha");
} else if (checkPic.endsWith('pictureTwo.jpg') && takePic == 'u') {
alert("Ready to download.")
}
}
</script>
</html>
Now we can talk about the CAPTCHA or is your question already solved?
Try this, you are using the full url of the image, which is not always the same as "pictureOne.jpg", you need get the substring of the url from the end.
<!DOCTYPE html>
<html>
<head>
<style>
</style>
</head>
<body>
<h1>Testing captcha</h1>
<hr>
<img id="firstImage" src="pictureOne.jpg">
<input type="text" id="firstInput"/>
<button type="button" onclick="checker()">Confirm</button>
<hr>
<p id="cone">Please type what you see in this picture, This is a captcha to prevent over-spamming</p>
</body>
<script>
function checker() {
alert(123);
var checkPic = document.getElementById('firstImage').src;
var takePic = document.getElementById('firstInput').value;
checkPic = checkPic.substring(checkPic.lastIndexOf('/')+1);
if (checkPic === "pictureOne.jpg" && takePic === 'c') {
document.getElementById('firstImage').src = 'pictureTwo.jpg';
alert("Please confirm the second captcha");
} else if (checkPic === 'pictureTwo.jpg' && takePic === 'u') {
alert("Ready to download.")
}
}
</script>
</html>
I have a very simple HTML/JavaScript form that I am working on for coursework, I have got it to work however i would like it to validate the input as the user types (my validation appears below the text field) how can I achieve this? My code is as follows:
<!DOCTYPE html>
<html>
<head>
<script class="jsbin" src="http:ajax.googleapis.com/ajax/libs/jquery/1/jquery.min.js"> </script>
<meta charset=utf-8 />
<title>Email Validation</title>
</head>
<body>
<form onsubmit='validate(); return false;'>
<p>Enter an email address:</p>
<input id='email' placeholder="example#example.com" size="21">
<button type='submit' id='validate'>Submit</button>
</form>
<br />
<h2 id='result'></h2>
<script>
function validateEmail(email) {
var re = /^(([^<>()[\]\\.,;:\s#\"]+(\.[^<>()[\]\\.,;:\s#\"]+)*)|(\".+\"))#((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\])|(([a-zA-Z\-0-9]+\.)+[a-zA-Z]{2,}))$/;
return re.test(email);
}
function validate() {
$("#result").text("");
var email = $("#email").val();
if (validateEmail(email)) {
$("#result").text(email + " is valid");
$("#result").css("color", "green");
} else {
$("#result").text(email + " is not valid");
$("#result").css("color", "red");
}
return false;
}
$("form").bind("submit", validate);
</script>
</body>
</html>
For methods not using jQuery, in case you're interested, there's another Stack Overflow question here: On Input Change Event.
There are many ways to do what you want listed there, but in this case you could do something like this:
var input = document.querySelector('input');
input.addEventListener('input', function()
{
// Check input.value for what you're looking for here
});
See the jsFiddle that Drew Noakes' made in that other page for an example.
But, since you're using jQuery, then Nicholas Kyriakides's suggestion is the way to go.
I've have tried alot of different ways with removing the child and nothing has worked so faar, well it has to some degree, either i have no messages or i keep getting message that just add to the span without deleting the other
Tried reading up on how to remove the child, and have tried every different ways i've found to remove it, my code might be wrong on creating the child and append it etc. since it's the first time i use this way. Been trying with a while loop to remove, and the one that is already outcommented in the code, and with firstChild. and with different names instead of msg.
My code looks like this in my script:
function validateName(input, id)
{
var res = true;
var msg = document.getElementById(id);
var error = document.createElement("span");
var errorMsg = "";
if (input == "" || input < 2) {
res = false;
// removeChildren(msg);
errorMsg = document.createTextNode("Input is to short!");
error.appendChild(errorMsg);
id.appendChild(error);
}
if (input >= 2 && input.match(/\d/)) {
res = false;
// removeChildren(msg);
errorMsg = document.createTextNode("Name contains a number!");
error.appendChild(errorMsg);
id.appendChild(error);
}
if (input >= 2 && !input.match(/\d/)) {
res = true;
// removeChildren(msg);
}
return res;
}
My small test page:
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>JSP Page</title>
<script src="Validator.js"></script>
<script>
function v1(e,id) {
if(validateName(document.form1.namefield.value, id) == false) {
document.getElementById("be").src="NotOkSmall.jpg";
}
if(validateName(document.form1.namefield.value) == true) {
document.getElementById("be").src="OkSmall.jpg";
}
}
</script>
</head>
<body>
<h1>Validation testing, HO!</h1>
<form name="form1" action="submit">
<div id="div1">
<input type="text" name ="namefield" id="f1" onkeydown="v1(be, div1)" >
<image id="be" src="NotOkSmall.jpg" alt="OkSmall.jpg" />
</div>
<input type="button" value="GO" onClick="v1(be)">
</form>
</body>
</html>
If anyone have any ideas to make it work I for one, would be a very happy guy :), as i have said before i am not even sure the creation of child is the correct way in this case. but as it works when i have removed removeChildren, it does write the correct messages, just dont delete any of them. So something must work..
Thanks.
You had some errors in your code like id.appendChild(error); where you had to use msg.appendChild(error);. Anyway I don't see a need to append/remove child nodes in this case. Just use hidden error placeholder and show it when you want to display an error message.
HTML:
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>JSP Page</title>
<script src="Validator.js"></script>
<script>
function v1(imgId) {
var img = document.getElementById(imgId),
val = document.form1.namefield.value;
img.src = img.alt = validateName(val)
? "OkSmall.jpg"
: "NotOkSmall.jpg";
}
</script>
</head>
<body>
<h1>Validation testing, HO!</h1>
<form name="form1" action="submit">
<div id="div1">
<input type="text" name ="namefield" id="f1" onkeyup="v1('be');" >
<image id="be" src="NotOkSmall.jpg" alt="NotOkSmall.jpg" />
<span id="error-message" class="invis"></span>
</div>
<input type="button" value="GO" onClick="v1('be');">
</form>
</body>
</html>
CSS:
.invis {
display: none;
}
JavaScript:
function validateName(input) {
var res = true,
errorMsg,
errorContainer = document.getElementById('error-message');
if(input.length < 2) {
res = false;
errorMsg = "Input is to short!";
}
if(input.length >= 2 && /\d/.test(input)) {
res = false;
errorMsg = "Name contains a number!";
}
if(res) {
errorContainer.style.display = 'none';
} else {
errorContainer.innerHTML = errorMsg;
errorContainer.style.display = 'inline';
}
return res;
}
DEMO