如何将javascript对象转置为键/值数组

Question

给定一个JavaScript对象，如何将其转换为对象数组（每个对象都有键，值）？例：var data = { firstName: 'John', lastName: 'Doe', email: '[e-mail]' }结果像：[  { key: 'firstName', value: 'John' },  { key: 'lastName', value: 'Doe' },  { key: 'email', value: '[e-mail]' }]

Answer 1

var data = { firstName: 'John', lastName: 'Doe', email: '[e-mail]' }

var output = Object.entries(data).map(([key, value]) => ({key,value}));

console.log(output);

Answer 2

使用map功能

var data = { firstName: 'John', lastName: 'Doe', email: '[e-mail]' };

var result = Object.keys(data).map(key => ({ key, value: data[key] }));

console.log(result);

    

Answer 3

您可以仅遍历对象的属性，并为每个属性创建一个新对象。

var data = { firstName: 'John', lastName: 'Doe', email: '[e-mail]' };

var result = [];

for(var key in data)

{

    if(data.hasOwnProperty(key))

    {

        result.push({

            key: key,

            value: data[key]

        });

    }

}