var length = arr.length; while(length>0) { alert(Hello,${arr[--length]}!); }
Hello,${arr[--length]}!
var index = 0 while(index<arr.length) { alert(Hello,${arr[index++]}!); }
Hello,${arr[index++]}!
奇怪明明加了模板字符串符号,不显示呢
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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淡淡流云1981
var length = arr.length; while(length>0) { alert(
Hello,${arr[--length]}!
); }var index = 0 while(index<arr.length) { alert(
Hello,${arr[index++]}!
); }