大家好，请问数据太多非常卡顿，这段js代码如何优化

Question

                    <script>
                        function takeout(th) {                            var text2 = $('textarea').val();                            var allcon2 = text2.split("\n");
                            $(th).val('');                            for (var i = 0; i < allcon2.length; i++) {
                                a = allcon2[i].split('\t');                                var ha = a.join("\t");
                                $(th).val($(th).val() + $.trim(ha) + '\n');
                            }                            return true;}                    </script>
                    
                    代码是：让一个tab分割的矩阵去掉两侧的空格### 问题描述