标签:put required for body turn inner var 正则 text
<!DOCTYPE html>
<html>
<body>
<p>用户名正则表达式 ,4到16位(字母,数字,下滑线,减号)</p>
<p id="demo"></p>
<form action="" method="get">
<p>用户名: <input type="text" name="fname" required></p>
<button onclick="myFunction1()">疯狂点我</button>
<p>密码强度,最少6位,包括至少1个大写字母,1个小写字母,1个数字,1个特殊字符</p>
<p>密码: <input type="password" name="lname" required></p>
<button onclick="myFunction()">疯狂点我</button>
<p>邮箱 <input type="text" name="lname" required></p>
<button onclick="myFunction()">疯狂点我</button>
<p>身份证 <input type="text" name="lname" required></p>
</form>
<script>
function myFunction1() {
var patrn=/^[a-zA-Z]{1}([a-zA-Z0-9]|[._]){4,16}$/;
if (!patrn.exec(s)) return false
return true
document.getElementById("demo").innerHTML = result;
}
</script>
</body>
</html>
标签:put required for body turn inner var 正则 text
原文地址:https://www.cnblogs.com/mumu597/p/9873961.html