var a = [1,2,3]; var b = a; a = [4,5,6]; alert(b); //[1,2,3]
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var a = [1,2,3]; var b = a; a.pop(); alert(b); //[1,2]
js 数组赋值问题 ：值传递还是引用？
原文：http://www.cnblogs.com/chris-oil/p/6348042.html
