主题：js数组去重 怎么实现整个‘43242’内容的显示 而不是按字符4，3，2，4，2一个个的去重显示！

js数组去重  怎么实现整个‘43242’内容的显示 而不是按字符4，3，2，4，2一个个的去重显示！

({
    input14: {
        label: '{{label}}',
        value: '{{value}}',
        field: '{{field}}',
        placeholder: '{{placeholder}}',
        required: '{{required}}',
        visible: '{{visible}}',
        textchanged: function() {
            // 数组去重
            let unique = function(arr) {
                var result = [],hash = {};
                for (var i = 0,elem; (elem = arr[i]) != null; i++) {
                    if (!hash[elem]) {
                        result.push(elem);
                        hash[elem] = true;
                    }
                }
                return result;
            }

            setTimeout(function() { //选中后，把值赋给控件
                var row = e.form.table1.current;
                row.成员 = JSON.stringify(e.form.input14.value);
                // row.成员=JSON.stringify(e.form.input14.valuecheckList);
                var arr = row.成员;
                console.log(row.成员);
                arr = unique(arr);
                console.log(arr.join(', '));
                // $.post("form506_save2.Ajax", {
                //     //  姓名: row.成员,
                //      姓名: arr.join(', '),
                // },
                // console.log(arr.join(', ')),
                // function(res) {
                // })
            },
            1000);

        },
        options: [],
        select: ''
    }
})

输出得到：

["13123","424323","43242","罗林"]
VM121:249 [, ", 1, 3, 2, ,, 4, 罗, 林, ]
VM121:247 ["13123","43242","罗林"]
VM121:249 [, ", 1, 3, 2, ,, 4, 罗, 林, ]
VM121:247 ["43242","罗林"]
VM121:249 [, ", 4, 3, 2, ,, 罗, 林, ]
VM121:247 ["罗林"]
VM121:249 [, ", 罗, 林, ]