问题描述
我厌倦了总是要写这样的代码:
I'm sick of tired of always having to write code like this:
function shallowExtend(obj1,obj2){
var key;
for ( key in obj2 ) {
if ( obj2.hasOwnProperty(key) === false ) continue;
obj1[key] = obj2[key]
}
}
或者如果我不想自己编写代码,实现一个已经执行的库。当然ES6 +正在拯救,这将为我们提供类似于 Object.prototype.extend(obj2 ...)
或 Object.extend (obj1,obj2 ...)
Or if I don't want to write the code myself, implement a library that does it already. Surely ES6+ is coming to the rescue on this will provide us with something like a Object.prototype.extend(obj2...)
or Object.extend(obj1,obj2...)
ES6 +是否提供这样的功能?如果还没有,那么这样的功能是否计划好了?如果没有计划,那么为什么不呢?
So does ES6+ provide such functionality? If not already there, then is such functionality planned? If not planned, then why not?
推荐答案
您将能够通过使用ES6中的浅层合并/扩展/分配Object.assign:
You will be able to do a shallow merge/extend/assign in ES6 by using Object.assign:
语法
其中 ...源表示源对象
注意:请勿将语法定义中的 ...来源与ES6扩展运算符混淆。
Note: do not confuse ...sources in the syntax definition with an ES6 spread operator.
示例:
var obj1 = {name: 'Daisy', age: 30};
var obj2 = {name: 'Casey'};
Object.assign(obj1, obj2);
console.log(obj1.name === 'Casey' && obj1.age === 30);
// true
这篇关于当然ES6 +必须有一种将两个javascript对象合并在一起的方法,是什么?的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持!