javascript 只允许输入数字

昨天从网上找的.忘了原帖地址了。

 
  // 只允许输入数字
  function noChar(e) {
    var keynum;
    var keychar;
    var numcheck;
    if(window.event) // IE
      {
      keynum = e.keyCode;
      }
    else if(e.which) // Netscape/Firefox/Opera
      {
      keynum = e.which;
      }
    keychar = String.fromCharCode(keynum);
    numcheck = /\d/;
    return numcheck.test(keychar);
  }

(return numcheck.test(keychar); 改为!return numcheck.test(keychar); 只允许输入英文字母)

<input name="report_row_order$!{velocityCount}" type="text" onkeypress="return noChar(event)" onbeforepaste="clipboardData.setData('text',clipboardData.getData('text').replace(/[^\d]/g,''))" value="$!{Obj.report_row_order}">