今天的任务
var tbody = document.querySelector('#tab').tBodies[0]; var th = document.querySelector('#tab').tHead.rows[0].cells; var td = tbody.rows; for(var i = 0;i < th.length;i++){ th[i].flag = 1; th[i].onclick = function(){ if(mark == <?php echo (count($hello)-2);?>){ sort(this.getAttribute('data-type'),this.flag,this.cellIndex); this.flag = -this.flag; } }; };