js 輸入框正則表達式(菜鳥必看教程)

更新時間：2017年02月19日 17:31:51 作者：叫我黑貓警長

下面小編就為大家?guī)硪黄猨s輸入框使用正則表達式校驗輸入內(nèi)容的實例。小編覺得挺不錯的，現(xiàn)在就分享給大家，也給大家做個參考。一起跟隨小編過來看看吧

源碼如下所示：

 
<!DOCTYPE html>
<html>
	<head>
		<meta charset="UTF-8">
		<title></title>
	</head>
	<body>
		用戶名:<input type="text"name = "user" id="user"/>
			 <span id="userSpan" style="font-size: 16pt;"></span>
		<br />
		密碼:<input type="text"name = "pwd" id="pwd"/>
			<span id="pwdSpan" style="font-size: 16pt;"></span>
		<br />
		確認密碼:<input type="text"name = "pwd2" id="pwd2"/>
		<span id="pwd2Span" style="font-size: 16pt;"></span>
		<br />
		郵箱:<input type="text"name = "email" id="email"/>
		<span id="emailSpan" style="font-size: 16pt;"></span>
		<br />
		手機號:<input type="text"name = "phone" id="phone"/>
		<span id="phoneSpan" style="font-size: 16pt;"></span>
		<br />
		身份證號:<input type="text"name = "status" id="status"/>
		<span id="statusSpan" style="font-size: 16pt;"></span>
		<br />
		地址:<input type="text"name = "address" id="address"/>
		<span id="addressSpan" style="font-size: 16pt;"></span>
		<br />
		<input type="button" value="校驗" onclick="verify()" />
		<script type="text/javascript">
			function verify() {
				
				//用戶名驗證
				var user = "";
				user = document.getElementById("user").value;
				var pattl = /^[A-Z][a-zA-Z0-9_]{6,20}$/;
				var result = pattl.test(user.trim());
				if (result) {
					document.getElementById("userSpan").innerHTML = "√"
					document.getElementById("userSpan").style.fontSize = "20pt"
				} else {
					document.getElementById("userSpan").innerHTML = "×"
				}
				//密碼驗證
				var pwd = "";
				pwd = document.getElementById("pwd").value;
				var pattl = /^[A-Z][a-zA-Z0-9_]{8,15}$/;
				var result = pattl.test(pwd.trim());
				if (result) {
					document.getElementById("pwdSpan").innerHTML = "√"
					document.getElementById("pwdSpan").style.fontSize = "20pt"
				} else {
					document.getElementById("pwdSpan").innerHTML = "×"
				}
				
				//確認密碼驗證
				var pwds = "";
				pwds = document.getElementById("pwd2").value;
				var pattl = /^[A-Z][a-zA-Z0-9_]{8,15}$/;
				var result = pattl.test(pwds.trim());
				if (result) {
					document.getElementById("pwd2Span").innerHTML = "√"
					document.getElementById("pwd2Span").style.fontSize = "20pt"
				} else {
					document.getElementById("pwd2Span").innerHTML = "×"
				}
					
				
				//郵箱驗證
				var emails = "";
				emails = document.getElementById("email").value;
				var pattl = /^[A-z0-9]+@[a-z0-9]+.com$/;
				var result = pattl.test(emails.trim());
				if (result) {
					document.getElementById("emailSpan").innerHTML = "√"
					document.getElementById("emailSpan").style.fontSize = "20pt"
				} else {
					document.getElementById("emailSpan").innerHTML = "×"
				}
 
				//手機號驗證
				var phones = "";
				phones = document.getElementById("phone").value;
				var pattl = /^(13[0-9]|14[5|7]|15[0|1|2|3|5|6|7|8|9]|18[0|1|2|3|5|6|7|8|9])\d{8}$/;
				var result = pattl.test(phones.trim());
				if (result) {
					document.getElementById("phoneSpan").innerHTML = "√"
					document.getElementById("phoneSpan").style.fontSize = "20pt"
				} else {
					document.getElementById("phoneSpan").innerHTML = "×"
				}
				
				//身份證號驗證
				var status1 = "";
				status1 = document.getElementById("status").value;
				var pattl = /^([1-9]){1}[0-9]{17}|[1-9]{1}[0-9]{16}(x|X)?$/;
				var result = pattl.test(status1.trim());
				if (result) {
					document.getElementById("statusSpan").innerHTML = "√"
					document.getElementById("statusSpan").style.fontSize = "20pt"
				} else {
					document.getElementById("statusSpan").innerHTML = "×"
				}
				//地址驗證
				var addres = "";
				addres = document.getElementById("address").value;
				var pattl = /^[\u4e00-\u9fa5]+[\u4E00-\u9FA5A-Za-z0-9_]+$/;
				var result = pattl.test(addres.trim());
				if (result) {
					document.getElementById("addressSpan").innerHTML = "√"
					document.getElementById("addressSpan").style.fontSize = "20pt"
				} else {
					document.getElementById("addressSpan").innerHTML = "×"
				}
				
			}
 
 
		</script>
	</body>
</html>

效果圖如下：