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验证输入的JavaScript代码

2004-12-16 16:15 639 查看
<HTML>
<HEAD>
<SCRIPT LANGUAGE="JavaScript">
<!--

  //var regexp =/^(/-|/+|[0-9])([0-9])*([0-9]|/.){0,1}([0-9])*$/;   //数字,包括整数,小数,正负数
  //var regexp = /^([/w/_/.])+@([/w]+/.)+([/w])+$/;                 //email地址
  //var regexp = new RegExp("^[a-z]+@([a-z]+/.)+([a-z])+$","i");
  //var regexp = /<(.*)>.*<///1>/
  //var regexp=/^((([1-9]/d{0,1})|(1/d{2})|(2[0-4]/d)|(25[0-5]))/.){3}(([1-9]/d{0,1})|(1/d{2})|(2[0-4]/d)|(25[0-5]))$/;//IP Address,bug:172.0.0.2 can't be a valid IP address,modified by below
  var regexp=/(^[0-9]{3,4}/-[0-9]{3,8}$)|(^[0-9]{3,8}$)|(^/([0-9]{3,4}/)[0-9]{3,8}$)|(^0{0,1}13[0-9]{9}$)/; //telephone NO. include mobile phone
  //var regexp=/^((([1-9]/d{0,1})|(1/d{2})|(2[0-4]/d)|(25[0-4]))/.)((0|([1-9]/d{0,1})|(1/d{2})|(2[0-4]/d)|(25[0-5]))/.){2}(0|([1-9]/d{0,1})|(1/d{2})|(2[0-4]/d)|(25[0-5]))$/;//IP Address
  var value=prompt("请输入一个数据","请在此输入");

  if (value == "")
  {
    alert("The field is empty!");
  }

  if (!regexp.test(value))
  {
    alert("格式不对!!!");
  }
  else
  {
 alert("OK");
  }

//-->
</SCRIPT>
</HEAD>

<BODY>

</BODY>
</HTML>
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