合并2个对象数组

一尘不染

合并2个对象数组

javascript

让我们看一个例子。

var arr1 = new Array({name: "lang", value: "English"}, {name: "age", value: "18"});
var arr2 = new Array({name : "childs", value: '5'}, {name: "lang", value: "German"});

我需要合并这两个对象数组并创建以下数组：

arr3 = new Array({name: "lang", value: "German"}, {name: "age", value: "18"}, {name : "childs", value: '5'});

有没有JavaScript或jQuery函数可以做到这一点？

$.extend不适合我它返回

arr4 = new Array({name : "childs", value: '5'}, {name: "lang", value: "German"});

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2020-05-05

一尘不染

如果要在JavaScript中合并2个对象数组。你可以使用这一招

Array.prototype.push.apply(arr1,arr2);

例如

var arr1 = [{name: "lang", value: "English"},{name: "age", value: "18"}];
var arr2 = [{name : "childs", value: '5'}, {name: "lang", value: "German"}];

Array.prototype.push.apply(arr1,arr2); 

console.log(arr1);  // final merged result will be in arr1

输出：

[{"name":"lang","value":"English"},
{"name":"age","value":"18"},
{"name":"childs","value":"5"},
{"name":"lang","value":"German"}]

2020-05-05

一尘不染

仅基于较新的Javascript的新版本，而无需任何第三方库。

const mergeByProperty = (target, source, prop) => {
  source.forEach(sourceElement => {
    let targetElement = target.find(targetElement => {
      return sourceElement[prop] === targetElement[prop];
    })
    targetElement ? Object.assign(targetElement, sourceElement) : target.push(sourceElement);
  })
}
var target /* arr1 */ = [{name: "lang", value: "English"}, {name: "age", value: "18"}];
var source /* arr2 */ = [{name : "childs", value: '5'}, {name: "lang", value: "German"}];

mergeByProperty(target, source, 'name');

console.log(target)

2020-05-05

合并2个对象数组

共2个答案