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Supplement 1 · Mar 6, 2015
第二行代码执行后，返回的不对，所以是chrome的bug吧？
Supplement 2 · Mar 6, 2015
低级错误，此帖完结，谢谢解答
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timonwong Mar 6, 2015
The concat() method ******returns a new array****** comprised of the array on which it is called joined with the array(s) and/or value(s) provided as arguments.
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iyaozhen Mar 6, 2015
 b = b.concat("111"); |
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iyaozhen Mar 6, 2015
 补个图 |
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otakustay Mar 6, 2015
在你执行第一行前b的内容是啥？
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zhengkai Mar 6, 2015
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