javascript dollar sign variable not working
May be you're trying to use jQuery when dom in not build. Try to use $(document).ready function:
(function ($) { $(document).ready(function () { $header = $("div.header"); $header.remove(); });})(jQuery);About what you have mantioned in the question:
jQuery(document).ready(function ($) { // code});It works because it do the same thing: it binds event handler on ready event and pass jQuery object as a parameter to the function as $.
Now what you did before:
(function ($) { $header = $("div.header"); $header.remove();})(jQuery);Here you just declare anonymous function with named $ parameter:
function ($) {}And call it with jQuery object as a parameter, which will be available in the function as $:
(function ($) {})(jQuery);