Using JQuery in Drupal 7
From the Drupal 7 upgrade guide:
Javascript should be made compatible with other libraries than jQuery by adding a small wrapper around your existing code:
(function ($) { // Original JavaScript code. })(jQuery);
The $ global will no longer refer to the jquery object. However, with this construction, the local variable $ will refer to jquery, allowing your code to access jQuery through $ anyway, while the code will not conflict with other libraries that use the $ global.
You can also just use the 'jQuery' variable instead of the $ variable in your code.
According to Firebug, your jQuery file is being loaded:
But the $
is being overwritten by something else:
What you should do is encapsulate the use of the $
variable with a function that invokes itself using the jQuery
object as it's first actual argument:
(function ($) {
// in this function, you can use the $ which refers to the jQuery object
}(jQuery));
"$ is not a function" is a very common error that you may face while working with jQuery. You can try any answers of given below:
(function($){
//your can write your code here with $ prefix
})(jQuery);
OR
jQuery(document).ready(function($){
//Write your code here
});
Basically this will allow our code to run and use the $ shortcut for JQuery.
Chances are your script is not initialized this way, you'll have to use Drupal.behaviors.YOURTHEMENAME
(function ($) {
Drupal.behaviors.YOURTHEMENAME = {
attach: function(context, settings) {
/*Add your js code here*/
alert('Code');
}
};
})(jQuery);