Javascript 里面这个是什么用法 - V2EX

Javascript 里面这个是什么用法 - V2EX

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> a = 'k' 'k' > {[a]: 1} { k: 1 }

这段代码是在babel-node里面跑的，查遍了文档也没有找到(~~文档里面肯定有~~)

3 条回复 2016-03-02 14:54:14 +08:00

1

gxm44

2016-03-02 14:50:09 +08:00

1

These are called "computed property names".
https://developer.mozilla.org/en-US/docs/Web/Javascript/Reference/Operators/Object_initializer#Computed_property_names

2

djyde

2016-03-02 14:51:16 +08:00

1

这是 ES6 的特性。

文档 https://developer.mozilla.org/en-US/docs/Web/Javascript/Reference/Operators/Object_initializer

3

agate

2016-03-02 14:54:14 +08:00

楼上正解~

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