So I know that if you use jQuery you can use $(document).load(function(){}); so that any code you write into the function gets executed after the whole page has loaded, but is there a way of doing something similar if you don't use jQuery and just use JS?
For example...
<html>
<head>
<script type="text/javascript">
var box = document.getElementById('box');
alert(box);
</script>
</head>
<body>
<div id="box" style="width:200px; height:200px; background-color:#999;
margin:20px;"></div>
</body>
</html>
If I use this method the alert just says null. So is there a way of making the js code run once the page has loaded?
So I know that if you use jQuery you can use $(document).load(function(){}); so that any code you write into the function gets executed after the whole page has loaded, but is there a way of doing something similar if you don't use jQuery and just use JS?
For example...
<html>
<head>
<script type="text/javascript">
var box = document.getElementById('box');
alert(box);
</script>
</head>
<body>
<div id="box" style="width:200px; height:200px; background-color:#999;
margin:20px;"></div>
</body>
</html>
If I use this method the alert just says null. So is there a way of making the js code run once the page has loaded?
4 Answers
Reset to default 15I use:
<script type="text/javascript">
window.onload = function(){
//do stuff here
};
</script>
This way you don't have to use any onload tags in your html.
The easiest way is to simply put your script at the end of the document, typically just before the closing body tag:
<html>
<head>
</head>
<body>
<div id="box" style="width:200px; height:200px; background-color:#999; margin:20px;"></div>
<script type="text/javascript">
var box = document.getElementById('box');
alert(box);
</script>
</body>
</html>
You can use a variety of methods to accomplish this.
The simplest, easiest method would be to simply add the script tag at the end of your body tag:
<html>
<head>
<title> Example </title>
</head>
<body>
<div>
<p>Hello</p>
</div>
<script type="text/javascript">
// Do stuff here
</script>
</body>
</html>
The way jQuery does it is something similar to:
window.onload = function() {
// Do stuff here
}
I usually just do it the second way, just in case.
To ensure cross-browser compatibility, crawl through the source of jQuery and find what they use.
You can use onload in your body tag.
<head>
<script type="text/javascript">
function doSomething() {
//your code here
}
</script>
</head>
<body onload="doSomething()">
$(document).load(function(){...});– adeneo Commented May 25, 2013 at 20:09