 
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> 
<html> 
<head> 
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> 
<title>表單驗證</title> 
<script language="javascript"> 
function check_1(param){//不為空 
if(param==""||param==null){return false;}else{return true;} 
} 
function check_2(param){//長度限制,字母是10個，漢字也是10個 
if(param.length>10){return false;}else{return true;} 
} 
function check_3(param){//只能輸入漢字 
var pattern= /^[\u4e00-\u9faf]+$/; 
var flag = pattern.test(param); 
if(flag==false){return false;}else{return true;} 
} 
function check_4(param){//只能輸入數(shù)字 
var pattern= /^[0-9]+$/; 
var flag = pattern.test(param); 
if(flag==false){return false;}else{return true;} 
} 
function check_5(param){//只能輸入數(shù)字字母下劃線 
var pattern= /^[0-9a-zA-z_]+$/; 
var flag = pattern.test(param); 
if(flag==false){return false;}else{return true;} 
} 
function check_6(param){//郵箱格式驗證 
var pattern= /^([a-zA-Z0-9]+[_|\_|\.]?)*[a-zA-Z0-9]+@([a-zA-Z0-9]+[_|\_|\.]?)*[a-zA-Z0-9]+\.[a-zA-Z]{2,3}$/; 
var flag = pattern.test(param); 
if(flag==false){return false;}else{return true;} 
} 
function check_7(param){//網(wǎng)址格式驗證 
var pattern= /^((https|http|ftp|rtsp|mms)?:\/\/)?(([0-9a-z_!~*'().&=+$%-]+: )?[0-9a-z_!~*'().&=+$%-]+@)?(([0-9]{1,3}\.){3}[0-9]{1,3}|([0-9a-z_!~*'()-]+\.)*([0-9a-z][0-9a-z-]{0,61})?[0-9a-z]\.[a-z]{2,6})(:[0-9]{1,4})?((\/?)|(\/[0-9a-z_!~*'().;?:@&=+$,%#-]+)+\/?)$/; 
var flag = pattern.test(param); 
if(flag==false){return false;}else{return true;} 
} 
function check(){ 
var value=document.getElementById("testValue").value; 
var result=check_7(value);//在這里設(shè)置驗證函數(shù)的名稱，我寫了check_1~check_7七個常用的表單驗證函數(shù) 
if(result==false){ 
document.getElementById("testValue").style.border="2px solid red"; 
}else{ 
//document.getElementById("testValue").style.border="2px solid green"; 
document.getElementById("testValue").style.border=""; 
} 
} 
</script> 
</head> 
<body> 
<div style="text-align: center;padding: 200px 0;"> 
請輸入： <input id="testValue" name="" class="" type="text" style="width:200px;height:30px;"></input> 
<input id="" name="" class="" type="button" value="點擊驗證" style="width:70px;height:30px;" onclick="check()"></input> 
</div> 
</body> 
</html> 