为什么比较{}和[]会显示错误? [英] Why does comparing {} and [] show an error?

问题描述

在空闲时间，我只是在玩js控制台，却遇到了意外错误:

On my free time, I was just playing with js console, I got an unexpected error:

js> [] == {}
false

js> {} == []
typein:5: SyntaxError: syntax error:

我尝试了===:

js> [] === {}
false
js> {} === []
typein:9: SyntaxError: syntax error:

在这里想错了吗?

我在Firefox，Chrome和jscore上对此进行了测试.

I tested this with Firefox, Chrome and jscore.

推荐答案

这是因为在第二种情况下，{}被解释为代码块，而不是对象.

That's because in the second case, {} is interpreted as a code block, rather than an object.

如果您尝试({}) == []，则效果很好.

If you try ({}) == [] it works just fine.

js> ({}) == []
false
js> ({}) === []
false

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