How to add javascript to HTML Page?
Question
I am new to web development and I want to add following function to my simple html page but if I press "click me" does not happen anything. description part does not hide and show
I added those codes as below. CSS is working perfectly. but JavaScript does not work. How can I fix this issue
<html>
<head>
<title>TEST</title>
<link rel="stylesheet" type="text/css" href="hpcss.css">
<script>
// Hide all the elements in the DOM that have a class of "box"
$('.box').hide();
// Make sure all the elements with a class of "clickme" are visible and bound
// with a click event to toggle the "box" state
$('.clickme').each(function() {
$(this).show(0).on('click', function(e) {
// This is only needed if your using an anchor to target the "box" elements
e.preventDefault();
// Find the next "box" element in the DOM
$(this).next('.box').slideToggle('fast');
});
});
</script>
</head>
<body align="center">
<a href="#" class="clickme">Click Me</a>
<div class="box">
First Description
</div>
<a href="#" class="clickme">Click Me</a>
<div class="box">
Second Description
</div>
</body>
</html>
5 answers
solution1
5 2015-02-03 06:51:45
You need to import jQuery, and only run the code once jQuery has loaded
HTML :
<script src="https://code.jquery.com/jquery-1.11.2.min.js"></script>
JS :
$(function() {
// your code here
})
The fiddle is working because jsfiddle automatically runs on DOM load, and inserts jQuery for you.
here is the actual source from jsfiddle (behind the scenes):
<script type='text/javascript'>//<![CDATA[
$(function(){
// Hide all the elements in the DOM that have a class of "box"
$('.box').hide();
// Make sure all the elements with a class of "clickme" are visible and bound
// with a click event to toggle the "box" state
$('.clickme').each(function() {
$(this).show(0).on('click', function(e) {
// This is only needed if your using an anchor to target the "box" elements
e.preventDefault();
// Find the next "box" element in the DOM
$(this).next('.box').slideToggle('fast');
});
});
});//]]>
</script>
solution2
2 ACCPTED 2015-02-03 06:53:16
you should do somethings like that:
$(document).ready(function() {
// add your code here
})
you run javascript before finishing load html --> error
solution3
2 2015-02-03 06:53:29
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.3/jquery.min.js"></script>
在你的脚本之前嵌入这个。
solution4
1 2015-02-03 06:53:02
Try to wrap your js code into
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.2/jquery.min.js"></script>
<script>
$(function() {
// your code will be here
});
</script>
It means that your code will be executed after page elements are loaded. Also I'v added jquery include.
solution5
0 2015-02-03 06:55:42
You attach the events before the DOM is created. When you're calling
// Make sure all the elements with a class of "clickme" are visible and bound
// with a click event to toggle the "box" state
$('.clickme').each(function() {
$(this).show(0).on('click', function(e) {
// This is only needed if your using an anchor to target the "box" elements
e.preventDefault();
// Find the next "box" element in the DOM
$(this).next('.box').slideToggle('fast');
});
});
The elements with the clickme class have not been created yet.
You can fix it by putting your script tags before the </body> tag, but by wrapping your javascript in a self-executing function like so:
$(function()
{
// Hide all the elements in the DOM that have a class of "box"
$('.box').hide();
// Make sure all the elements with a class of "clickme" are visible and bound
// with a click event to toggle the "box" state
$('.clickme').each(function() {
$(this).show(0).on('click', function(e) {
// This is only needed if your using an anchor to target the "box" elements
e.preventDefault();
// Find the next "box" element in the DOM
$(this).next('.box').slideToggle('fast');
});
});
});
Also, you're not including the jQuery library.
Always check the console for errors.
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