Cannot get jQuery to work in WordPress [duplicate]

by

@milo might have a point. WordPress loads jQuery in no-conflict mode.

So this:

$(document).ready(function(){
    alert('ready');
});

becomes this:

jQuery(document).ready(function(){
    alert('ready');
});

if you want to use $ to not have to refactor your code just pass it to the function:

jQuery(document).ready(function($){
    $('.selector').html('this will now work');
});