[英]Add a comma to the array but the last one.
当我向用户打印输出时，我目前正在使用此方法在数组的元素中添加逗号。
totalCity + = totalCity +“，”
如何使其添加到数组中除最后一个元素之外的所有元素？
目前，如果我有这个
abc
它添加了a，b，c，
我希望它成为a，b，c
谢谢您的帮助
["you","can","simply","join","them!"].join(", ");
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