直接上代码,你一看就懂了。

var obj = {
    "1": "a",
    "2": "b",
    "3": "c"
};

Object.keys(obj).forEach(function (key) {
    console.log("key:", key);
    console.log("value:", obj[key]);
});

result:
    key: 1
    value: a
    key: 2
    value: b
    key: 3
    value: c

 

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