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作业

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var length = arr.length; while(length>0) { alert(Hello,${arr[--length]}!); }

var index = 0 while(index<arr.length) { alert(Hello,${arr[index++]}!); }

奇怪明明加了模板字符串符号,不显示呢

Alex__XD

#3 Created at ... [Delete] [Delete and Lock User]

要点击插入代码,然后在相应区域填写代码,不然直接写会过滤。

`代码区`

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