取消空格js与动态加入多个上传文件
/** 修剪字串前后的空格 */ function trim(s) { var count = s.length; var st = 0; // start var end = count-1; // end if (s == "") return s; while (st < count) { if (s.charAt(st) == " ") st ++; else break; } while (end > st) { if (s.charAt(end) == " ") end --; else break; } return s.substring(st,end + 1); } //动态加入多个上传文件框function addMore() {var td = document.getElementById("more");var br = document.createElement("br");var input = document.createElement("input");var button = document.createElement("input");input.type = "file";//类型input.name = "file";//name值button.type = "button";//类型button.value = "Remove";//value值//写事件//表示的意思是input的button按键事件button.onclick = function() {//删除td.removeChild(br);td.removeChild(input);td.removeChild(button);}td.appendChild(br);//在td中添加<br>标签td.appendChild(input);//在td中添加<input>标签td.appendChild(button);//在td中添加<input>标签}