超大滑块中模糊的jquery语法

Question

I was going through the supersized.3.2.5.js file of the full screen image slider - supersized .

I can't understand the syntax of the following lines. Though I am not pasting the complete code here yet i think that is not any prob for the syntax explanation.

/* Variables
        ----------------------------*/
            var el = '#supersized',
            base = this;
        // Access to jQuery and DOM versions of element
        base.$el = $(el);
        base.el = el;

I need the explanation of the last 2 lines ...

Answer 1

They just save the jQuery object and the id string in different variables

The jQuery one gets prefixed with $

base.$el = jQuery Object version of el (#supersized)

base.el == just the id (the string)

Answer 2

倒数第二行存储的是jQuery对象，其中包含ID为“ supersized”的DOM元素，而最后一行仅存储选择器字符串“ #supersized”。