I keep on getting null every time I try to store values in Section B and C but works fine for A. I can't seem to find where the issue is. I am trying to have a user's info display on a different page based on the section he chooses. If the user chooses section B for example I would want to let the user know on the next page that he/she has ordered a seat in Section B and whatever the available seat is along with the name and price. After the boarding pass is displayed on the next page, I want the array to change from having 5 seats to 4 and keep this array updated everytime a new person signs up.
index.html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
<script src = "airplane.js"></script>
</head>
<style>
</style>
<body>
<h1>Welcome To Air France</h1>
<h2>Choose your seat section here</h2>
<h3>Section A</h3>
<p>Price:</p>
<div id = "Section1Price"></div>
<div id = "Section1"></div>
<form action = "bookingPage.html" method="post">
<p>Enter your full name to book in this section:</p>
<input id="clientNameA" type="text" size="25" height="25">
<input id = "bookSeatA" type="button" onclick="location.href='bookingPage.html';" value="Book a Seat in Section A" />
</form>
<h3>Section B</h3>
<p>Price:</p>
<div id = "Section2Price"></div>
<div id = "Section2"></div>
<form action = "bookingPage.html" method="post">
<p>Enter your full name to book in this section:</p>
<input id="clientNameB" type="text" size="25" height="25">
<input id = "bookSeatB" type = "button" onclick="location.href='bookingPage.html';" value = "Book a Seat in Section B">
</form>
<h3>Section C</h3>
<p>Price:</p>
<div id = "Section3Price"></div>
<div id = "Section3"></div>
<form action = "bookingPage.html" method="post">
<p>Enter your full name to book in this section:</p>
<input id="clientNameC" type="text" size="25" height="25">
<input id = "bookSeatC" type = "button" onclick="location.href='bookingPage.html';" value = "Book a Seat in Section C">
</form>
</body>
</html>
airplane.js
function start()
{
var price1;
price1 = Math.random() * (200 - 100) + 100;
price1 = price1.toFixed(2);
var price2 = (Math.random() * (300 - 100) + 100).toFixed(2);
var price3 = (Math.random() * (300 - 100) + 100).toFixed(2);
var priceArray = [price1, price2, price3];
var sectionASeats = [];
var sectionBSeats = [];
var sectionCSeats = [];
for (var k = 0; k < 5; k++)
{
sectionASeats[k] = 0;
sectionBSeats[k] = 0;
sectionCSeats[k] = 0;
}
var buttonA = document.getElementById( "bookSeatA" );
buttonA.addEventListener( "click", function() {bookSeat(sectionASeats)}, false );
buttonA.addEventListener("click",function(){handleSubmitA(priceArray[0],sectionASeats,"A")}, false );
var buttonB = document.getElementById( "bookSeatB" );
buttonB.addEventListener( "click", function() {bookSeat(sectionBSeats)}, false );
buttonB.addEventListener("click",function(){handleSubmitB(priceArray[1]),sectionBSeats,"B"}, false );
var buttonC = document.getElementById( "bookSeatC" );
buttonC.addEventListener( "click", function() {bookSeat(sectionCSeats)}, false );
buttonC.addEventListener("click",function(){handleSubmitC(priceArray[2]),sectionCSeats,"C"}, false );
var result1 = "";
var result2 = "" ;
var result3 = "" ;
result1 += checkSection(sectionASeats, "A" );
result2 += checkSection(sectionBSeats, "B" );
result3 += checkSection(sectionCSeats, "C" );
priceArray.sort(function(a,b) {return a-b});
document.getElementById("Section1Price").innerHTML = "$" + priceArray[0];
document.getElementById("Section1").innerHTML = result1;
document.getElementById("Section2Price").innerHTML = "$" + priceArray[1];
document.getElementById("Section2").innerHTML = result2;
document.getElementById("Section3Price").innerHTML ="$" + priceArray[2];
document.getElementById("Section3").innerHTML = result3;
}
function sectionSeatNum (array)
{
for (var i = 0; i < array.length;i++)
{
if (array[i] == 1)
{
return i+1;
}
}
}
function handleSubmitA(priceForA,array,section)
{
const name = document.getElementById("clientNameA").value;
var seatNumber = sectionSeatNum(array);
sessionStorage.setItem("ARRAY", JSON.stringify(array));
sessionStorage.setItem("SECTION", section);
sessionStorage.setItem("SEATNUM", seatNumber);
sessionStorage.setItem("NAME", name);
sessionStorage.setItem("PRICE", priceForA);
return;
}
function handleSubmitB(priceForB,array,section)
{
const name = document.getElementById("clientNameB").value;
var seatNumber = sectionSeatNum(array);
sessionStorage.setItem("ARRAY", JSON.stringify(array));
sessionStorage.setItem("SECTION", section);
sessionStorage.setItem("SEATNUM", seatNumber);
sessionStorage.setItem("NAME", name);
sessionStorage.setItem("PRICE", priceForB);
return;
}
function handleSubmitC(priceForC,array,section)
{
const name = document.getElementById("clientNameC").value;
var seatNumber = sectionSeatNum(array);
sessionStorage.setItem("ARRAY", JSON.stringify(array));
sessionStorage.setItem("SECTION", section);
sessionStorage.setItem("SEATNUM", seatNumber);
sessionStorage.setItem("NAME", name);
sessionStorage.setItem("PRICE", priceForC);
return;
}
function bookSeat(array)
{
for(var i = 0; i < array.length; i++)
{
if(array[i] == 0)
{
array[i] = 1;
break;
}
}
}
function checkSection(array, section)
{
var result;
var check = true;
var emptyCounter = 0;
var takenCounter = 0;
for (var i = 0;i<array.length;i++)
{
if(array[i] == 0)
{
emptyCounter++;
}
else{
takenCounter++;
}
}
if(takenCounter == array.length)
{
check = false;
result = "<p>There are no seats available in Section " + section + ".</p>";
}
else{
check = true;
result = "<p>There are " + emptyCounter + " seats available in Section " + section + ".</p>";
}
return result;
}
window.addEventListener("load", start,false);
bookingPage.html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
<script src = "booking.js"></script>
</head>
<body>
<h1>Thank you for choosing Air France</h1>
<h2>Here is your boarding pass</h2>
<h3 id="booking-name"></h3>
<form action="index.html" method="get">
<input id = "backToHome" type="button" onclick="location.href='index.html';" value="Return to Homepage">
</form>
</body>
</html>
booking.js
function start()
{
const name = sessionStorage.getItem("NAME");
const price = sessionStorage.getItem("PRICE");
const arrayBookings = JSON.parse(sessionStorage.getItem("ARRAY"));
const section = sessionStorage.getItem("SECTION");
var seatNum = sessionStorage.getItem("SEATNUM")
var result = "";
result += "<p> Thank you " +name+ " for flying with us. Here is your boarding pass.</p>";
result += "<p> Name: " + name + "</p>";
result += "<p> Section: "+ section + "</p>";
result += "Price: $"+price;
result += "<p>Seat number: "+seatNum+ "</p>";
// result += "<p>"+arrayBookings+"</p>";
document.getElementById("booking-name").innerHTML = result;
}
window.addEventListener("load", start, false);
You have typo here
buttonB.addEventListener("click",function(){handleSubmitB(priceArray[1]),sectionBSeats,"B"}, false );
while you want to have
buttonB.addEventListener("click",function(){handleSubmitB(priceArray[1],sectionBSeats,"B")}, false );
Session C is the same error.
So I'm using the PokeAPI to fetch the name of a Pokemon, then shuffling that name, and the user is supposed to guess what it is in the input. If they don't know then they can click the next button and it reshuffles a new mon. If they guess right they can press the same next button for a new mon. Each time they guess right the score increases by 1. That's working but I cant figure out why the out of/total games span isn't updating as well. Please excuse my terrible attempt at JS I'm very new if you can help me make my code look better that would be great.
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width,initial-scale=1" />
<link rel="stylesheet" href="style.css" />
<title>Who's that Pkmn?</title>
</head>
<body>
<header>
<h1>Who's that Pokemon?!</h1>
</header>
<div id="jumble">?????</div>
<div class="container">
<input id="guess" type="text" placeholder="enter pkmn name" />
<button id="submit" class="btn" type="submit">go</button>
<button id="next" class="btn">next</button>
<p id="msg">unshuffle the letters</p>
</div>
<div id="scorekeepers">
<p>Score: <span id="score">0</span>
out of: <span id="gamesPlayed">0</span></p>
</div>
<script src="script.js"></script>
</body>
</html>
let jumbledName = document.querySelector("#jumble");
let guessInput = document.querySelector('#guess')
let submitButton = document.querySelector('#submit')
let nextButton=document.querySelector('#next')
let messageDisplay = document.querySelector('#msg')
let score = document.querySelector('#score')
let gamesPlayed = document.querySelector('#gamesPlayed')
score = 0;
gamesPlayed = 0;
let getPokemonName = function() {
fetch(`https://pokeapi.co/api/v2/pokemon/${Math.floor(Math.random()*151+1)}/`)
.then(function(response) {
return response.json();
})
.then(function(data) {
const pokeName = data.name;
const pokeNameJumbled = pokeName.shuffle();
displayInfomation(pokeName, pokeNameJumbled);
});
};
getPokemonName();
guessInput.value=''
// pokeNameJumbled=''
const displayInfomation = function(name, jumbledName) {
pokeName = name;
pokeNameJumbled = jumbledName;
jumble.textContent = jumbledName;
};
const displayMessage = function(message) {
document.querySelector("#msg").textContent = message;
};
const checkName = function () {
document.querySelector("#guess").textContent = guessInput;
const guess = document.querySelector("#guess").value.toLowerCase();
if (!guess) {
displayMessage("No guess entered!");
} else if (guess === pokeName) {
displayMessage(`Thats correct! It's ${pokeName}!`)
score++
document.querySelector("#score").textContent = score;
guessInput.value=''
} else if (guess != pokeName) {
displayMessage(`Wrong!`);
document.querySelector("#gamesPlayed").textContent = gamesPlayed;
}
};
submitButton.addEventListener('click', checkName)
nextButton.addEventListener('click',getPokemonName)
String.prototype.shuffle = function() {
var a = this.split(""),
n = a.length;
for (var i = n - 1; i > 0; i--) {
var j = Math.floor(Math.random() * (i + 1));
var tmp = a[i];
a[i] = a[j];
a[j] = tmp;
}
return a.join("");
};
So this exercice is about outputing a word by the number typed in the input section simple but i find this problem the loop for won't work if there is any help i will be greatfull
<head>
<meta charset="utf-8" />
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<script defer>
function Verifer() {
var ch = document.querySelector("input").value
var nbr = document.getElementById("nb").value
if ((nbr > 0) && (ch != "")) {
for (let i = 1; i >= nbr; i++) {
var txt = ""
txt += "<h1>" + ch + "</h1> <br>"
document.getElementById("d2").innerHTML = txt
}
} else {
alert("Retype plz")
}
}
</script>
</head>
<body>
// the first input is to type a String //the seconde input to type the number of repetition of this String
<strong>Chain :</strong><input type="text" id="chain" maxlength="20"><br>
<strong>nombre de rep :</strong><input type="number" maxlength="5" id="nb"><br>
<button type="button" onclick="Verifer()">Envoyer</button>
<div id="d2">
//This part is dedicated to the output of the function
</div>
</body>
change
var nbr = document.getElementById("nb").value
to
var nbr = parseInt(document.getElementById("nb").value)
Is this what you want to do? Your question is a bit vague.
function Verifer() {
var ch = document.querySelector("input").value;
var nbr = document.getElementById("nb").value;
nbr = parseInt(nbr); //Parse to int
console.log(nbr);
if (nbr === NaN || !ch) { //Validate
document.getElementById("nb").value = "invalid";
return;
}
var txt = ""; //Set var in scope around for loop
for (var i = 1; i <= nbr; i++) { //repeat when i is less or equal to nbr
txt += "<h1>" + ch + "</h1> <br>" //Append txt
}
document.getElementById("d2").innerHTML = txt; //Add txt to element html
}
<strong>Chain :</strong><input type="text" id="chain" maxlength="20"><br>
<strong>nombre de rep :</strong><input type="number" maxlength="5" id="nb"><br>
<button type="button" onclick="Verifer()">Envoyer</button>
<div id="d2">
</div>
I am a complete Beginner using Javascripts and simple descriptive solutions would be very helpful. This is completely on one machine, no server available and I just need to do basic stuff using HTML etc.
I have a task wherein I need to provide an option on the browser to Upload a text file (containing numbers separated by a comma) using Mozilla Firefox only, read the uploaded file into an array, perform some computation on that array and then store the array in another text file and provide an option on the web browser to download the output file.
This is what I have done so far.
**********************************
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<script src="javaScripts/script.js" type="text/javascript"></script>
<script src="script.js"></script>
<head runat="server">
<title></title>
</head>
<body>
<input type="file" name="input" size="40"/>
<br />
<input id="Button" type="button" value="Average" onclick="CPU_Average()"/>
<br />
<span id="output1"></span>
</body>
</html>
<script id="average" type="text/javascript">
function CPU_Average() {
var output1 = document.getElementById("output1");
output1.innerHTML = "";
var row = 5;
var col = 5;
var size = row*col;
try{
var windowSize = 3;
var i=0,j=0,k=0,p=0,q=0,count=0,limit=1;
var check=0;
var sum=0.0;
var vec1 = new Uint32Array(size);
var vec_op = new Float32Array(size);
for (i=0; i<size; i=i+1) {
vec1[i] = Math.floor(Math.random() * 100); //Random number 0..99
}
output1.innerHTML += "<br>Vector length = " + size;
output1.innerHTML += "<br>Vector1 = ";
for (i = 0; i < size; i = i + 1) {
output1.innerHTML += vec1[i] + ", ";
}
for(k=0;k<size;k=k+1)
{
sum=0.0;
i=Math.floor(k/row);
j=k%row;
count=0;
for(p=i-limit;p<=i+limit;p=p+1)
{
for(q=j-limit;q<=j+limit;q=q+1)
{
if(p>=0 && q>=0)
{
check = ((p*row)+q);
if(check<size && ((q*col)+p)<size)
{
sum = sum+vec1[check];
count=count+1;
}
}
}
}
vec_op[k] = (sum/count);
}
output1.innerHTML += "<br>Result = ";
for (i = 0; i < size; i = i + 1) {
output1.innerHTML += vec_op[i].toFixed(2) + ", ";
}
}
catch(e) {
document.getElementById("output1").innerHTML
+= "<h3>ERROR:</h3><pre style=\"color:red;\">" + e.message + "</pre>";
throw e;
}
}
</script>
***********************
currently I am generating random numbers and storing them in the input array(vec1), but I need to load that array from an input file. Also my output array(vec_op) prints into a text box but I need to write that array in a text file, each element separated by a comma and allow the user to download it.
If I need to use JQuery or Ajax for it then please explain how to add them in the above code.
Thanks.
So i am pretty new at this and want to be able to add a dollar to the "deposit" text box every time I click the button. I'm going to have to do this with a quarter, dime, and nickel, button as well. This is what I have so far.
<input type="button" value="Dollar" id="dollar" />
$<input type="text" id="deposit" />
And the javascript is:
var $ = function (id) { return document.getElementById(id); }
var item = [];
var total = 0;
for (i=0; i < item.length; i++){
total += item[i];
$("deposit").value = total;
}
$("dollar").onclick = item.push(1);
Whatever help you can give is much appreciated!
Don't you mean
Live Demo
var $ = function (id) { return document.getElementById(id); }
var add = function(fld,val) {
return (parseFloat(fld.value)+val).toFixed(2);
}
window.onload=function() {
$("dollar").onclick=function() {
$("deposit").value = add($("deposit"),1);
}
$("dime").onclick=function() {
$("deposit").value = add($("deposit"),.1);
}
$("nickel").onclick=function() {
$("deposit").value = add($("deposit"),.05);
}
$("refund").onclick = function() {
$("deposit").value = "0.00";
}
}
Try this:
HTML
<!DOCTYPE html>
<html>
<head>
<script data-require="jquery#1.9.1" data-semver="1.9.1" src="//ajax.googleapis.com/ajax/libs/jquery/1.10.2/jquery.min.js"></script>
<script src="script.js"></script>
</head>
<body>
<input type="button" value="Dollar" id="dollar" />
$ <input type="text" id="deposit" />
</body>
</html>
JavaScript:
$(function() {
var item = [];
$("#dollar").click(function() {
item.push(1);
var total = 0;
for (var i = 0; i < item.length; i++) {
total += item[i];
$("#deposit").val(total);
}
});
});
Plunker example