将对象数组转换为数组数组

Question

var json = [{one: "text1", two: "text2", three: 3, four: 4},
            {one: "text3", two: "text4", three: 5, four: 6},
            {one: "text5", two: "text7", three: 8, four: 9}]

如何将上面的对象数组转换为下面的数组数组？

var array = [["text1", "text2", 3, 4], 
             ["text3", "text4", 5, 6], 
             ["text5", "text7", 8, 9]]

是否有ES2015功能可以轻松转换？如果不是for循环可能会.

Answer 1

你可以使用map和Object.values

let array = json.map(obj => Object.values(obj));

Answer 2

您可以Object.values直接用作回调，这在 ES 2017 中可用

var array = [{ one: "text1", two: "text2", three: 3, four: 4 }, { one: "text3", two: "text4", three: 5, four: 6 }, { one: "text5", two: "text7", three: 8, four: 9 }],
    result = array.map(Object.values);
                
console.log(result);

经典方法

var array = [{ one: "text1", two: "text2", three: 3, four: 4 }, { one: "text3", two: "text4", three: 5, four: 6 }, { one: "text5", two: "text7", three: 8, four: 9 }],
    result = array.map(o => Object.keys(o).map(k => o[k]));
                
console.log(result);

Answer 3

如果您需要明确指定顺序，您可以解构和映射每个项目：

var array = json.map(({ one, two, three, four }) => ([one, two, three, four]))

这也适用于原始对象中的无序键，例如：

var json = [{ two: "text2", one: "text1", three: 3, four: 4 },
            { one: "text3", three: 5, two: "text4", four: 6 },
            { four: 9, two: "text7", three: 8, one: "text5" }]