var a = {name: 1}var b =ab = {name: 2}a = null//{name: 1}就是垃圾
var a = {name: 1}
var b =a
b = {name: 2}
a = null
//{name: 1}就是垃圾
关闭页面,IE6必须回收所有对象,它不会自动回收,只有关闭浏览器才会回收
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让时间为你证明