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慎用try catch
source link: https://juejin.im/post/5c17dad7f265da611510b63f
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前言 ECMA-262第3版引入了try catch语句，作为JavaScript中处理异常的一种标准方式。基本的语法如下所示。 但是在前端js代码中很少看到try catch语句,并不是所以代码都需要加try catch来作得不偿失的“保险”，下面来分析作为
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