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很笨的办法

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sunnyDreamy

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

alert('欢迎'+arr.sort()[0]+','+arr[1]+','+arr[2]+'和'+arr[3]+'同学');

Slulu_su

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

var arrWel = '欢迎'; var arrAnd = '和'; var arrStu = '同学!'; alert(arrWel + arr.join(',') + arrAnd + arrStu);


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