JS的对象复制——Js的Number类型和String类型都不是地址引用,而是重新创建对象复制值;var a = 1;var b = a;b = 2;alert(a);结果:1var c = "abc";var d = c;d = "def";alert(c);结果:abc只有对象类型才是地址引用的;var a = {x:1};var b = a;b.x = 2;alert(a.x);结果:2所以
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