从三个数组创建对象

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在以下情况下有些卡住。 我有三个数组，使用这些数组想创建一个新对象。

A little bit stuck on the following scenario. I have three arrays, and using the arrays would like to create a new object.

var fields = ['firstName', 'lastName', 'email'], oldVals = ['John', 'Doe', 'doe@mail'], newVals = ['Jo','Do','jo@mail'];

新对象应为：

{ "firstName": { "oldValue": "John", "newValue": "Jo" }, "lastName": { "oldValue": "John", "newValue": "Do" }, "email": { "oldValue": "doe@mail", "newValue": "jo@mail" } }

提前谢谢。

推荐答案

// first check that your arrays are actually all the same length. Then... var obj = {}; for(var i=0;i<fields.length;i++) { obj[fields[i]] = { oldValue: oldVals[i], newValue: newVals[i] } }