将多个对象属性值合并为一个 [英] Concatenate multiple object property values into one

问题描述

如果我的对象具有以下结构:

If I have object with following structure:

var test = {
     property1: "value1",
     property2: "value2",
     property3: "value3",
     property4: "value4",
     property5: "value5"
}

假设属性名称是固定的，并且并非总是按此顺序排列，那么将这个对象转换为以下对象的最优雅的方法是什么:

Assuming that property names are fixed and not always in this order, what is the most elegant way to convert this object into following one:

var test_copy = {
     prop1Copy: "value1",
     propConcat: "value2, value3, value4, value5"
}

推荐答案

我认为没有特别优雅的方法.

I don't think there's any particularly elegant way to do this.

由于您的输入数据只有少量的固定键，因此使用循环几乎没有任何意义，所以这行得通:

Since your input data has a small number fixed keys there's barely any point using a loop, so this works:

function munge(o) {
    return {
        prop1Copy: o.property1,
        propConcat: [o.property2, o.property3, o.property4, o.property5].join(', ')
    }
}

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