如何找到两个JavaScript对象数组之间的差异? [英] How to find differences between two JavaScript arrays of objects?
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问题描述
我有两个JavaScript数组 orig
(原始对象数组)和 update
(更新后的原始数组)对象)具有相同的长度并包含对象,我想输出每对对象之间的差异。
I have two JavaScript arrays orig
(the original array of objects) and update
(the updated orig array of objects) that have the same length and contain objects, and I want to output the differences between the each pair of objects.
示例:
var orig = [{enabled:"true", name:"Obj1", id:3},{enabled:"true", name:"Obj2", id:4}];
var update = [{enabled:"true", name:"Obj1", id:3}, {enabled:"true", name:"Obj2-updated", id:4}];
输出应为:名称:Obj2-updated
我实施了一些但需要优化...
I implemented something but it needs optimization...
for(var prop=0; prop<orig.length; prop++) {
for(prop=0; prop<update.length; prop++) {
if(orig[prop].enabled != update.enabled) { console.log(update.enabled) }
if(orig[prop].name != update[prop].name) { console.log(update[prop].name) }
if(orig[prop].id != update[prop].id) { console.log(update[prop].id) }
}
}
推荐答案
您可以过滤密钥并使用更新后的密钥获取结果集。
You could filter the keys and get a result set with the updated keys.
var orig = [{ enabled: "true", name: "Obj1", id: 3 }, { enabled: "true", name: "Obj2", id: 4 }],
update = [{ enabled: "true", name: "Obj1", id: 3 }, { enabled: "true", name: "Obj2-updated", id: 4 }],
difference = [];
orig.forEach(function (a, i) {
Object.keys(a).forEach(function (k) {
if (a[k] !== update[i][k]) {
difference.push({ id: update[i].id, key: k, value: update[i][k], index: i });
}
});
});
console.log(difference);
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