javascript数组克隆简单实现方法

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<Meta http-equiv="Content-Type" content="text/html; charset=gb2312"> 新建网页 1 @H_502_8@ var a = ['a','b','c','d','e','f']; var b = a.concat(); b.push('test is ok!'); alert(b.join(',')); alert(a.join(','));

编程之家小编补充

The JavaScript To clone the contents of a given array,all you need to do is call slice,providing 0 as the first argument:

var clone = myArray.slice(0);

The code above creates clone of the original array; keep in mind that if objects exist in your array,the references are kept; i.e. the code above does not do a "deep" clone of the array contents. To add clone as a native method to arrays,you'd do something like this:

Array.prototype.clone = function() { return this.slice(0); };

And there you have it! Don't iterate over arrays to clone them if all you need is a naive clone!

希望本文所述对大家JavaScript程序设计有所帮助。

原文链接:https://www.f2er.com/js/51075.html

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