How to implement a simple login page-JS Tutorial-php.cn

How to implement a simple login page
一个新手
Release： 2017-09-30 09:52:21
Original
2049 people have browsed it
<!DOCTYPE html><html>

    <head>
        <meta charset="UTF-8">
        <title></title>
    </head>
    <script src="js/jquery-1.8.0.min.js"></script>
    <script>
        $(function() {
            $("input[name=&#39;uname&#39;]").blur(function() { //失去焦点
                var namestr = $(this).val();                
                    var regstr = /^[\u4e00-\u9fa5]{2,4}$/;                
                        if(!regstr.test(namestr)) {
                    $(this).parent().next().html("用户名必须是2-4个汉字").css("color", "red");                    return false;
                }                return true;
            });
            $("input[name = &#39;uname&#39;]").focus(function() { //获取焦点                
            $(this).val("");
                $(this).parent().next().html("");
            });
            $("input[name=&#39;pwd&#39;]").blur(function() {                
            var pwdstr = $(this).val();                
            var regstr = /^\w{6}$/;                
            if(!regstr.test(pwdstr)) {
                    $(this).parent().next().html("密码必须是6位数字字母下划线").css("color", "red");                    return false;
                }                return true;
            });
            $("input[name=&#39;pwd&#39;]").focus(function() {
                $(this).parent().next().html("");
            });
            $("input[name=&#39;birthday&#39;]").blur(function() {                
            var birthdaystr = $(this).val();                
            var regstr = /^(19|20)\d{2}-(1[0-2]|0?[1-9])-(3[0-1]|2[0-9]|0?[1-9])$/;                
            if(!regstr.test(birthdaystr)) {
                    $(this).parent().next().html("日期格式不正确").css("color", "red");                    return false;
                }                
                return true;
            });
            $("input[name=&#39;birthday&#39;]").focus(function() {
                $(this).parent().next().html("");
            });
            $("input[name=&#39;email&#39;]").blur(function(){                
            var emailstr = $(this).val();                
            var regstr = /^[\w\-]+@[a-z0-9A-Z]+(\.[a-zA-Z]{2,3}){1,2}$/;                
            if(!regstr.test(emailstr)){
                    $(this).parent().next().html("邮箱格式不正确").css("color","red");                    return false;
                }                
                return true;
            });
            $("input[name=&#39;email&#39;]").focus(function(){
                $(this).parent().next().html("");
            });
            
        });   
         </script>
    <style>
        body {
            font-size: 12px;
        }
        
        #home {
            background-color: beige;
            border: solid 1px black;
            width: 550px;
            height: 185px;
            margin: auto;
            margin-top: 20px;
        }
        
        #head {
            height: 135px;
        }
        
        #foot {
            text-align: center;
        }
        
        .dl1 {
            clear: both;
            padding-left: 10px;
        }
        
        .dl1 dt {
            float: left;
            height: 30px;
            width: 80px;
            line-height: 30px;
        }
        
        .dl1 dd {
            float: left;
            height: 30px;
            line-height: 30px;
            /*width: 250px;*/
        }
        
        #btn_res {
            background-image: url(img/reset.gif);
            width: 80px;
            height: 34px;
        }
        
        #btn_sub {
            background-image: url(img/submit.gif);
            width: 80px;
            height: 34px;
        }
    </style>

    <body>
        <p id="home">
            <p id="head">
                <form action="" method="post">
                    <dl class="dl1">
                        <dt>用户名 : </dt>
                        <dd class="dd1"><input type="text" value="输入用户名" name="uname" /></dd>
                        <dd></dd>
                    </dl>
                    <dl class="dl1">
                        <dt>用户密码 : </dt>
                        <dd class="dd1"><input type="password" name="pwd" /></dd>
                        <dd></dd>
                    </dl>
                    <dl class="dl1">
                        <dt>出生日期 : </dt>
                        <dd class="dd1"><input type="text" name="birthday" /></dd>
                        <dd>yyyy-mm-dd</dd>
                    </dl>
                    <dl class="dl1">
                        <dt>用户邮箱 : </dt>
                        <dd><input type="text" name="email"/></dd>
                        <dd></dd>
                    </dl>
                </form>
            </p>
            <p id="foot">
                <input type="submit" value="" id="btn_sub" />
                <input type="reset" value="" id="btn_res" />
            </p>
        </p>
    </body>
  </html>
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