js json數組 及 數組的一些操做

<script>    var jsonArr = [        {id: 10, name: 'a'},        {id: 7, name: 'n'},        {id: 1, name: 'x'},        {id: 3, name: 'y'},        {id: 2, name: 'c'},    ]    var arr = [1, 2, 1, 2, 34, 5, 23112, 1];    //排序數組    function sortArr(a, b) {        return a - b    }    console.log(arr.sort(sortTest))    //找數組中的最大值    console.log(Math.max.apply(Math, arr))    //找數組中的最大值的索引    console.log(arr.indexOf(Math.max.apply(Math, arr)))    //找出json數組中最大值的索引    var cur_index = 0    for (index in result) {        if (result[cur_index]['id'] < result[index]['id']) {            cur_index = index        }    }    console.log(cur_index)    //排序json數組    function sortJsonArr(a, b) {        return a.id - b.id    }    result.sort(sortJsonArr);    console.log(jsonArr);</script>