题解 | #数据类型转换#

第一种方法，concat

<script type="text/javascript">
    // 填写JavaScript
    function _splice(left, right) {
        return left.toString().concat(right.toString());
    }
</script>

第二种方法，splice追加

<script type="text/javascript">
    // 填写JavaScript
    function _splice(left, right) {
        let newLeft = [left.toString()];
        let newRight = right.toString();
        newLeft.splice(1,0,newRight);
        return newLeft.join('');
    }
    console.log(_splice(233,233));
</script>