<script type="text/javascript">        var arrObj = [];        var str = ‘good‘;        var arr = str.split(‘‘);        for (var i = 0; i < arr.length; i++) {            var _j = -1;            for (var j = 0; j < arrObj.length; j++) {                if (arrObj[j].key == arr[i]) {//判断数组中是否已存在该字符串                    _j = j;                }            }            var num = arrObj[_j] != null ? (arrObj[_j].value + 1) : 1;            if (_j != -1) { arrObj.splice(_j, 1); }            arrObj.push({ key: arr[i], value: num });        };        for (var z = 0; z < arrObj.length; z++) {            document.write(arrObj[z].key + arrObj[z].value);        }    </script>