常用js函数

Posted 2020-08-04

1、获得元素到页面的绝对距离

1        function getPos(obj) {
2         var pos = {left:0, top:0};
3         while (obj) {
4             pos.left += obj.offsetLeft;
5             pos.top += obj.offsetTop;
6             obj = obj.offsetParent;
7         }
8         return pos;
9     }