11 js怎么遍历json二维数组对象

var datas = [{
            "id": 0,
            "chiild": [{
                "msg": "111"
            }, {
                "msg": "222"
            }]
        }, {
            "id": 1,
            "chiild": [{
                "msg": "333"
            }, {
                "msg": "444"
            }]
        }, {
            "id": 2,
            "chiild": [{
                "msg": "467"
            }, {
                "msg": "58921"
            }]
        }];
        var str = ""; //存放第一层遍历的值
        var strArray = []; //存放第二层遍历的值

        for (var i = 0; i < datas.length; i++) {

            str += datas[i].id; //获取第一层的值
            for (var j = 0; j < datas[i].chiild.length; j++) {

                strArray.push(datas[i].chiild[j].msg); //将拿到的值存入数组

            }
        }
        console.log(strArray);

显示结果:

image.png