I am new to javascript and jquery. I want to use $(document).ready to register some event handlers. For example, code like this, and my question is what javascript libraries do I need to refer to at the head of the page in order to use $(document).ready? Appreciate if anyone could provide me a simple easy to use sample to learn $(document).ready.
<script>$(document).ready(function()
{
// function implementation internals
});
</script>
thanks in advance, George
All you need is the jQuery library.
You can either download the library and include it from your own server or you could use one of the many CDN's which provide the library. For instance:
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.4/jquery.min.js"></script>
<script type="text/javascript">
$(document).ready(function() {
// do something useful
});
</script>
Google keeps copies of a bunch of libraries on their servers, which are pretty reliable.
Just add the following to your <head> section, and place your snippet somewhere below.
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.4.4/jquery.min.js" type="text/javascript"></script>
script tags into the <head> section. Probably a better idea to put those at the end of the <body> tag.In summary,
Put the <script> tag provided by sje397 in the <head> section of the page, which provides the only library you need... jQuery.
(Alternatively: <script src="http://code.jquery.com/jquery-1.4.4.js" type="text/javascript"></script>)
Read http://docs.jquery.com/Tutorials:How_jQuery_Works
And you should be good to go.
<html>
<head>
</head>
<body>
<div id="someElement">Click Me</div>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.4.4/jquery.min.js" type="text/javascript"></script>
<script type="text/javascript">
(function($) {
$(document).ready(function() {
$('#someElement').bind('click', function(event) {
// event.preventDefault(); // you might want to do this if your event handler has a default action associated with it (e.g. a link that gets clicked with an href)
// do stuff on your event (change click to whatever you need)
});
});
})(jQuery);
</script>
</body>
</html>
