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<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Document</title>
</head>
<body>
    <script>
    let allArr = [
        {
            "a": "aaaaaaaa",
            "b": "bbbbbbbb",
            "c": "cccccccc",
            "d": "dddddddd",
            "e": "eeeeeeee"
        },
        {
            "a": "aaaaaaaa",
            "b": "bbbbbbbb",
            "c": "cccccccc",
            "d": "dddddddd",
            "e": "eeeeeeee"
        },
        {
            "a": "aaaaaaaa",
            "b": "bbbbbbbb",
            "c": "cccccccc",
            "d": "dddddddd",
            "e": "eeeeeeee"
        }
    ];
    let arr = ["a", "b", "c", "f"];

    // map/forEach
    let newArr = [];
    allArr.map((v1, k1) => {
        let newJson = {};// 关键中间环节
        arr.map((v2, k2) => {
            if( v1.hasOwnProperty(v2) ) {
                newJson[v2] = v1[v2];
            }
        });
        newArr.push(newJson);
    })
    console.log(newArr);
    </script>
</body>
</html>

 

posted @ 2017-07-14 12:00  DuangDang  阅读(166)  评论(0)  编辑  收藏  举报