!function(){function fd(){}; return delete fd;}() 返回true

源自：4-3 [JavaScript]属性操作

!function(){function fd(){}; return delete fd;}() 返回true

!function(){function fd(){}; return delete fd;}() 返回true 求指教

提问者：0620yy 2015-08-12 10:46

个回答

qq_慕慕947699

2019-10-22 10:55:26

delete 操作符会从某个对象上移除指定属性；
如果你试图删除的属性不存在，那么delete将不会起任何作用，但仍会返回true

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慕九州5609282

2015-10-31 12:07:02

感叹号取反了换种写法就是true了
(function(){function fd(){}; return delete fd;})()

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慕九州5609282

2015-10-31 11:58:10

!function(){function fd(){ console.log('1')}; delete fd; fd()}()

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