自己封装的一个原生JS拖动方法(推荐)

代码: function drag(t,p){ var point = p || null, target = t || null, resultX = 0, resultY = 0; (!point)? point = target : ''; //如果没有拖动点,则拖动点默认为整个别拖动元素 function getPos(t){ var offsetLeft = 0, offsetTop = 0, offsetParent = t; while(offsetParent){ offsetLeft+=