完成登录与注册页面的前端

完成登录与注册页面的HTML+CSS+JS,其中的输入项检查包括:

用户名6-12位

首字母不能是数字

只能包含字母和数字

密码6-12位

注册页两次密码是否一致

JS:

function fnLogin() {
    var uSer = document.getElementById("user");
    var pAss = document.getElementById("pass");
    var oError = document.getElementById("error_box");
    oError.innerHTML = "<br>";
    if (uSer.value.length < 6 || uSer.value.length > 20) {
        oError.innerHTML = "请输入6-20位用户名";
        return
    } else if ((uSer.value.charCodeAt(0) >= 48) && (uSer.value.charCodeAt(0) <= 57)) {
        oError.innerHTML = "用户名首字不能是数字";
        return
    } else for (var i = 0; i < uSer.value.length; i++) {
        if ((uSer.value.charCodeAt(i) < 48) || (uSer.value.charCodeAt(i) > 57) && (uSer.value.charCodeAt(i) < 97) || (uSer.value.charCodeAt(i) > 122)) {
            oError.innerHTML = "用户名只能是数字和字母";
            return
        }
    }

    if (pAss.value.length < 6 || pAss.value.length > 20) {
        oError.innerHTML = "请输入6-20位密码";
        return
    }
    // 验证弹框
    window.alert("成功")
}


function fnRegistration() {
    var uSer = document.getElementById("user");
    var pAss = document.getElementById("pass");
    var aGain = document.getElementById("again");
    var oError = document.getElementById("error_box");

    oError.innerHTML = "<br>";

    // 验证用户名
    if (uSer.value.length < 6 || uSer.value.length > 20) {
        oError.innerHTML = "请输入6-20位用户名";
        return
    } else if ((uSer.value.charCodeAt(0) >= 48) && (uSer.value.charCodeAt(0) <= 57)) {
        oError.innerHTML = "用户名首字不能是数字";
        return
    } else for (var i = 0; i < uSer.value.length; i++) {
        if ((uSer.value.charCodeAt(i) < 48) || (uSer.value.charCodeAt(i) > 57) && (uSer.value.charCodeAt(i) < 97) || (uSer.value.charCodeAt(i) > 122)) {
            oError.innerHTML = "用户名只能是数字和字母";
            return
        }
    }

    // 验证密码
    if (pAss.value.length < 6 || pAss.value.length > 20) {
        oError.innerHTML = "请输入6-20位密码";
        return
    }

    // 验证再次输入的密码
    if (aGain.value != pAss.value) {
        oError.innerHTML = "请输入相同的密码";
        return
    }
    // 验证弹框
    window.alert("成功")
}

CSS:

body{
    background: paleturquoise;}
#container{width: 400px}
#header{background-color: #48dbff
}
#content{background-color: aquamarine}
#footer{background-color: #ff9230
}

 

登录HTML:

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>text</title>
    <link rel="stylesheet" type="text/css" href="../static/css/text.css">
    <script src="../static/js/text.js"></script>
</head>
<body>
<div id="container">
    <div id="header"><h2 align="center">登录</h2></div>
    <div id="content">
        <form>
            账号:<input type="text" name="user" id="user" placeholder="输入用户名">
            <br>
            密码:<input type="password" name="pass" id="pass" placeholder="输入密码">
            <input type="checkbox" name="c1" id="c1" value="">记住账号
            <br>
            <div id="error_box"><br></div>
            <input type="button" value="登录" onclick="fnLogin()">&nbsp



        </form>
    </div></div>


</body>
</html>

注册HTML:

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>text2</title>
    <link rel="stylesheet" type="text/css" href="../static/css/text.css">
    <script src="../static/js/text.js"></script>
</head>
<body>
<div id="container">
    <div id="header"><h2 align="center">注册</h2></div>
    <div id="content">
        <form>
            <p align="center">账号:</p>
            <p align="center">
                <input type="text" name="user" id="user" placeholder="输入用户名">
            </p>
            <p align="center">密码:</p>
            <p align="center">
                <input type="password" name="pass" id="pass" placeholder="输入密码">
            </p>
            <p align="center">再输一次密码:</p>
            <p align="center">
                <input type="password" name="again" id="again" placeholder="再输一次密码">
            <div id="error_box"><br></div>
            <p align="center">
                <input type="button" value="注册" onclick="fnRegistration()">
            </p>

        </form>

</div></div>

</body>
</html>

 

posted @ 2017-11-01 15:55  003蒋宇翔  阅读(167)  评论(0编辑  收藏  举报