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[js] 第726天 JS中把其它类型转成字符串的方法及规则是什么？ #3803

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haizhilin2013 opened this issue Apr 10, 2021 · 1 comment

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haizhilin2013 commented Apr 10, 2021

第726天 JS中把其它类型转成字符串的方法及规则是什么？

我也要出题

haizhilin2013 added the js label

touryung commented Apr 13, 2021

强制转换：使用 String()，例如 String(1)
隐式转换：例如 "" + 2，加法里有一个是字符串，整个表达式的结果就是字符串
toString()：调用非 undefined 和 null 值的 toString() 方法，例如 [1, 2, 3].toString()

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