jquery的封装

Posted 2022-12-28 zhaodz

1.jq架构

(function(window,undefined)
    var jQuery = function()
        
    
    window.jQuery=window.$=jQuery
)(window)

2.获取元素

(function(window,undefined)
    var jQuery = function(selector)
   var elements = document.querySelectorAll(selector)
   for(var i=0;i<elements.length;i++)
       this[i] = elements[i]
   
   this.length = elements.length
    
    window.jQuery = window.$ = jQuery
)(window)