10.31

Posted 2020-10-12 037吴宜珊

tags:

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1.

<!DOCTYPE html>
<!--suppress ALL -->
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>登录</title>
    <script>
        function fnlogin() {
            var oUname = document.getElementById("uname")
            var oError = document.getElementById("error_box")
            if (oUname.value.length < 6) {
                oError.innerHTML = "用户名至少6位";
                return;
            } else if ((oUname.value.charCodeAt(0) >= 48 && (oUname.value.charCodeAt(0)) <= 57)){
            oError.innerHTML = "first letter";
            // noinspection JSAnnotator
            return;
        }else for (var i = 0; i < oUname.value.length; i++) {
                        if ((oUname.value.charCodeAt(i) < 48) || (oUname.value.charCodeAt(i) > 57) && (oUname.value.charCodeAt(i) < 97) || (oUname.value.charCodeAt(i) > 122)) {
                    oError.innerHTML = "only letter or number";
                    return;
                    }
                }

        if (oUname.value.length > 6 & opassward.value.length < 6) {
            oError.innerHTML = "密码至少为6位"
        }
        }
    </script>
</head>
<body>
<div class="box">
    <h2>登录</h2>
    <div class="input_box">
        <input id="uname" type="text" placeholder="请输入用户名">
    </div>
    <div class="input_box">
        <input id="upass" type="password" placeholder="请输入密码">
    </div>
    <div id="error_box"><br></div>
    <div class="input_box">
        <button onclick="fnlogin()">登录</button>
    </div>
</div>
</body>

2.html,js,css

body{
    background: #ff91ba;
    padding-right:200px;
    padding-left:200px;
    color: #ffa45c;
    padding-top: 40px;
    font-size: 16px;
    background: #e2c6d6;
    font-family:verdana,Arial,Helvetica,sans-serif;
}
p{
    padding-left: 120px;
}
h2{
    padding-left: 90px;
}

function fnLogin() {
    var oUname = document.getElementById("uname")
    var oName = document.getElementById("nname")
    var oError = document.getElementById("error_box")
    var oUpass = document.getElementById("upass")
    var ooUpass=document.getElementById("uupass")
    oError.innerHTML = "<br>"
    //unname
    if (oUname.value.length < 6 || oUname.value.length > 20) {
        oError.innerHTML = "用户名6-12位";
        return;
    } else if ((oUname.value.charCodeAt(0) >= 48) && (oUname.value.charCodeAt(0) <= 57)) {
        oError.innerHTML = "first letter.";
        return;
    } else for (var i = 0; i < oUname.value.length; i++) {
        if ((oUname.value.charCodeAt(i) < 48) || (oUname.value.charCodeAt(i) > 57) && (oUname.value.charCodeAt(i) < 97) || (oUname.value.charCodeAt(i) > 122)) {
            oError.innerHTML = "only letter or number";
            return;
        }
    }

    //upass
    if (oUpass.value.length < 6 || oUpass.value.length > 12) {
        oError.innerHTML = "密码6-12位"
        return;
    }
    //uupass
    if (ooUpass.value!=oUpass.value) {
        oError.innerHTML = "重复密码错误"
        return;
    }
    //name
    if (oName.value.length < 3 || oUpass.value.length > 6) {
        oError.innerHTML = "昵称2-6位";
        return;
    }else for (var i = 0; i < oUname.value.length; i++){
        if ((oUname.value.charCodeAt(i) < 48) || (oUname.value.charCodeAt(i) > 57) && (oUname.value.charCodeAt(i) < 97) || (oUname.value.charCodeAt(i) > 122)) {
            oError.innerHTML = "only letter or number";
            return;
        }
    }
                window.alert("登录成功！")


        }

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>注册</title>
    <link href="../static/css/14.css" rel="stylesheet" type="text/css">
    <script src="../static/js/b.js"></script>
</head>
<body>
<div class="box">
    <h2>QQ</h2>
   <h3>注册</h3>
    <div class="input_box">
        <input id="uname" type="text" placeholder="请输入用户名" style="width:300px">

    </div>
    <div class="input_box">
        <input id="upass" type="password" placeholder="请输入密码" style="width:300px">
    </div>
    <div class="input_box">
        <input id="uupass" type="password" placeholder="请重复输入密码" style="width:300px">
    </div>
    </div>
    <br>
    <div id="error_box"><br></div>
    <div class="input_box">
        <button onclick="fnLogin()">注册</button><br>
    </div>
</div>
</body>
</html>

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