// 可跨页面通讯
window.addEventListener("storage", fuction(event){
// event.key, event.oldValue, event.newValue
console.log(event)
}, false)
function test(){
try {
var obj = {"a" : 1}
return obj
} finally {
// return 后,继续执行
console.log("in")
obj = null
}
}
var ret = test()
console.log(ret)