做一个＆QUOT; DIFF＆QUOT;就在JavaScript / jQuery的关联数组？ [英] Doing a "Diff" on an Associative Array in javascript / jQuery?

问题描述

如果我有两个关联数组，这将是做差异对他们的价值观的最有效方法是什么？

If I have two associative arrays, what would be the most efficient way of doing a diff against their values?

例如，给出：

  array1 = {
    foreground: 'red',
    shape: 'circle',
    background: 'yellow'
  };

  array2 = {
    foreground: 'red',
    shape: 'square',
    angle: '90',
    background: 'yellow'
  };

我怎么会选一对另一方，使得项目的丢失的或的其他的是结果数组。在这种情况下，如果我想在数组2比较ARRAY1，它将返回：

How would I check one against the other, such that the items missing or additional are the resulting array. In this case, if I wanted to compare array1 within array2, it would return:

array3 = {shape: 'circle'}

虽然如果我ARRAY1内比较数组2，它将返回：

Whilst if I compared array2 within array1, it would return:

array3 = {shape: 'square', angle: '90'}

在此先感谢您的帮助！

Thanks in advance for your help!

推荐答案

试试这个：

function diff(obj1, obj2) {
    var result = {};
    $.each(obj1, function (key, value) {
        if (!obj2.hasOwnProperty(key) || obj2[key] !== obj1[key]) {
            result[key] = value;
        }
    });

    return result;
}

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