第四周jsp作业 

<%--
  Created by IntelliJ IDEA.
  User: Dell
  Date: 2021/3/27
  Time: 19:51
  To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <style>
        div {
            width: 160px;
            height: 36px;
            background-color: #f40;
            line-height: 36px;
            text-align: center;
            color: #fff;
            font-size: 16px;
            margin: 30px auto;
            cursor: pointer;
            -webkit-user-select: none; /*禁止用户选中文字*/
        }
    </style>
</head>
<body>
 
<form action="/dl_war_exploded/ss" method="post">
    <table>
        <tr>
            <td>用户名:</td>
            <td><input type="text" name="username" class="username"> </td>
        </tr>
        <tr>
            <td>密  码:</td>
            <td><input type="password" name="password" class="password"> </td>
        </tr>
 
            <td>验证码:</td>
            <td><input type="text" name="yzm" id="inyzm"></td>
        </tr>
        <tr>
            <td></td>
            <td><div id="code_box">Af3D</div></td>
        </tr>
        <tr>
            <td></td>
            <td colspan="2"><input type="submit" value="登录" onclick="yzyzm()"> </td>
        </tr>
    </table>
</form>
<!--<div id="code_box">Af3D</div>-->
 
<script>
    var result;
    var code_box = document.getElementById("code_box");
 
    function refreshCode() {
 
       
        var code = '0123456789qwertyuiopasdfghjklzxcvbnmQWERTYUIOPASDFGHJKLZXCVBNM',
            char = '',
            result = '';
 
        for (var i = 0; i < 4; i++) {
 
           
            var code_index = Math.round(Math.random()*61);
           
            var char = code[code_index];
           
            if (result.toUpperCase().indexOf(char.toUpperCase()) > -1)
               
            {
                i --;
         
                continue;
            }
            result += char;
        }
        code_box.innerHTML = result;
    }
    //点击事件
    code_box.onclick = refreshCode;
 
    function yzyzm() {
        var inyzm = document.getElementById("inyzm").value;
        if(inyzm!==result.toLowerCase()){
            alert("验证码输入错误");
        }
    }
</script>
 
 
</body>
</html>

 

posted @ 2021-03-28 22:27  计算机1804梁浩  阅读(49)  评论(0)    收藏  举报