The jQuery site lists the basic plugin syntax for jQuery as this:
(function( $ ){
$.fn.myPlugin = function() {
// there's no need to do $(this) because
// "this" is already a jquery object
// $(this) would be the same as $($('#element'));
this.fadeIn('normal', function(){
// the this keyword is a DOM element
});
};
})( jQuery );
I'd just like to understand what is going on there from Javascript's point of view, because it doesn't look like it follows any syntax I've seen JS do before. So here's my list of questions:
-
如果替换函数($)...对于一个变量，比如"the_function"，语法如下所示:
(the_function)( jQuery );What is "( jQuery );" doing? Are the parenthesis around the_function really necessary? Why are they there? Is there another piece of code you can give that is similar?
它以function($)开头.所以它正在创建一个函数，据我所知，这个函数永远不会运行，参数是$，这个参数已经定义了？那里发生了什么事？
Thanks for the help!