Question

鉴于这两个对象：

firstObject：

var firstObject = {
    title: 'value1',
    year: 'value2',
    contributors: 'value3',
    abstract: 'value4'
};

secondObject：

var secondObject = {
    title: 'Title',
    year: 'Year',
    contributors: 'Contributors',
    abstract: 'Abstract'
};

如何创建像这样结构化的第三个对象？：

var thirdObject = {
    Title: 'value1'
    Year: 'value2',
    Contributors: 'value3',
    Abstract: 'value4'
};

基本上将secondObject的属性指定为thirdObject的键，将firstObject的属性指定为thirdObject的属性。

注意：我不想要任何firstObject键的大写。

Answer 1

你可以使用类似的东西：

var firstObject = {
    title: 'value1',
    year: 'value2',
    contributors: 'value3',
    abstract: 'value4'
};

var secondObject = {
    title: 'Title',
    year: 'Year',
    contributors: 'Contributors',
    abstract: 'Abstract'
};

var newObj = {};

$.each(secondObject, function(i){
    newObj[this] = firstObject[i];
});

//Vanilla JS version
for(var x in secondObject){
    newObj[secondObject[x]] = firstObject[x];
}
console.log(newObj);

http://jsfiddle.net/kq6tcp5L/

Answer 2

Example here。这个分配＆＃34;＆＃34;如果key在firstObject中不存在。

  var firstObject = {
        title: 'value1',
        year: 'value2',
        contributors: 'value3',
        abstract: 'value4'
    };

    var secondObject = {
        title: 'Title',
        year: 'Year',
        contributors: 'Contributors',
        abstract: 'Abstract',
        extra:''
    };
    var thirdObject ={};

    for(var key in secondObject)
    {
        if (secondObject.hasOwnProperty(key))
        {
          thirdObject[key] = (typeof firstObject[key] === "undefined")?"":firstObject[key];
        }
    }

    console.log(thirdObject);

使用其他对象的属性创建对象

2 个答案: