JavaScript 数组分配问题 [英] JavaScript array assign issue

问题描述

我刚刚创建了两个数组，并为其中一个数组分配了一个插入的键值对.然后我分配或复制一个数组给其他人.之后我将另一个键值对添加到第二个数组，但它也反映到原始数组.例如.

I just created two arrays and assigned a inserted a key value pair to one of the array. Then i assigned or copy an array to other. After that i added another key value pair to second array, but it reflects to the original array also. For example.

var array1 =[];
var array2 =[];
array1.value1 ='1';
array2 = array1;
array2.value2 ='2';
console.log(array1); // it prints {value1:1, value2:2}

为什么在我为 array2 添加键值对时更改了 array1 对象?

why its changing the array1 object while i added a key value pair for array2?

推荐答案

通过执行 array2 = array1; 您将 array1 对象分配给 array2 变量.所以修改 array2 将修改关联的对象，即 array1

By doing array2 = array1; you are assigning the array1 object to array2 variable. So modifying array2 will modify the object associated i.e. array1

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