案例6_表单检验与Bootstrap_概述

案例6_表单检验

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>注册页面</title>
<style>
    *{
        margin: 0px;
        padding: 0px;
        box-sizing: border-box;
    }
    body{
        background: url("img/register_bg.png") no-repeat center;
        padding-top: 25px;
    }

    .rg_layout{
        width: 900px;
        height: 500px;
        border: 8px solid #EEEEEE;
        background-color: white;
        /*让div水平居中*/
        margin: auto;
    }

    .rg_left{
        /*border: 1px solid red;*/
        float: left;
        margin: 15px;
    }
    .rg_left > p:first-child{
        color:#FFD026;
        font-size: 20px;
    }

    .rg_left > p:last-child{
        color:#A6A6A6;
        font-size: 20px;

    }


    .rg_center{
        float: left;
       /* border: 1px solid red;*/

    }

    .rg_right{
        /*border: 1px solid red;*/
        float: right;
        margin: 15px;
    }

    .rg_right > p:first-child{
        font-size: 15px;

    }
    .rg_right p a {
        color:pink;
    }

    .td_left{
        width: 100px;
        text-align: right;
        height: 45px;
    }
    .td_right{
        padding-left: 50px ;
    }

    #username,#password,#email,#name,#tel,#birthday,#checkcode{
        width: 251px;
        height: 32px;
        border: 1px solid #A6A6A6 ;
        /*设置边框圆角*/
        border-radius: 5px;
        padding-left: 10px;
    }
    #checkcode{
        width: 110px;
    }

    #img_check{
        height: 32px;
        vertical-align: middle;
    }

    #btn_sub{
        width: 150px;
        height: 40px;
        background-color: #FFD026;
        border: 1px solid #FFD026 ;
    }
    .error{
        color:red;
    }
    #td_sub{
        padding-left: 150px;
    }

</style>
<script>

    /*
        分析：
            1.给表单绑定onsubmit事件。监听器中判断每一个方法校验的结果。
                如果都为true，则监听器方法返回true
                如果有一个为false，则监听器方法返回false

            2.定义一些方法分别校验各个表单项。
            3.给各个表单项绑定onblur事件。



     */

    window.onload = function(){
        //1.给表单绑定onsubmit事件
        document.getElementById("form").onsubmit = function(){
            //调用用户校验方法   chekUsername();
            //调用密码校验方法   chekPassword();
            //return checkUsername() && checkPassword();

            return checkUsername() && checkPassword();
        }

        //给用户名和密码框分别绑定离焦事件
        document.getElementById("username").onblur = checkUsername;
        document.getElementById("password").onblur = checkPassword;
    }

    //校验用户名
    function checkUsername(){
        //1.获取用户名的值
        var username = document.getElementById("username").value;
        //2.定义正则表达式
        var reg_username = /^\w{6,12}$/;
        //3.判断值是否符合正则的规则
        var flag = reg_username.test(username);
        //4.提示信息
        var s_username = document.getElementById("s_username");

        if(flag){
            //提示绿色对勾
            s_username.innerHTML = "<img width='35' height='25' src='img/gou.png'/>";
        }else{
            //提示红色用户名有误
            s_username.innerHTML = "用户名格式有误";
        }
        return flag;
    }

    //校验密码
    function checkPassword(){
        //1.获取用户名的值
        var password = document.getElementById("password").value;
        //2.定义正则表达式
        var reg_password = /^\w{6,12}$/;
        //3.判断值是否符合正则的规则
        var flag = reg_password.test(password);
        //4.提示信息
        var s_password = document.getElementById("s_password");

        if(flag){
            //提示绿色对勾
            s_password.innerHTML = "<img width='35' height='25' src='img/gou.png'/>";
        }else{
            //提示红色用户名有误
            s_password.innerHTML = "密码格式有误";
        }
        return flag;
    }



</script>
</head>
<body>

<div class="rg_layout">
    <div class="rg_left">
        <p>新用户注册</p>
        <p>USER REGISTER</p>

    </div>

    <div class="rg_center">
        <div class="rg_form">
            <!--定义表单 form-->
            <form action="#" id="form" method="get">
                <table>
                    <tr>
                        <td class="td_left"><label for="username">用户名</label></td>
                        <td class="td_right">
                            <input type="text" name="username" id="username" placeholder="请输入用户名">
                            <span id="s_username" class="error"></span>
                        </td>
                    </tr>

                    <tr>
                        <td class="td_left"><label for="password">密码</label></td>
                        <td class="td_right">
                            <input type="password" name="password" id="password" placeholder="请输入密码">
                            <span id="s_password" class="error"></span>
                        </td>
                    </tr>

                    <tr>
                        <td class="td_left"><label for="email">Email</label></td>
                        <td class="td_right"><input type="email" name="email" id="email" placeholder="请输入邮箱"></td>
                    </tr>

                    <tr>
                        <td class="td_left"><label for="name">姓名</label></td>
                        <td class="td_right"><input type="text" name="name" id="name" placeholder="请输入姓名"></td>
                    </tr>

                    <tr>
                        <td class="td_left"><label for="tel">手机号</label></td>
                        <td class="td_right"><input type="text" name="tel" id="tel" placeholder="请输入手机号"></td>
                    </tr>

                    <tr>
                        <td class="td_left"><label>性别</label></td>
                        <td class="td_right">
                            <input type="radio" name="gender" value="male" checked> 男
                            <input type="radio" name="gender" value="female"> 女
                        </td>
                    </tr>

                    <tr>
                        <td class="td_left"><label for="birthday">出生日期</label></td>
                        <td class="td_right"><input type="date" name="birthday" id="birthday" placeholder="请输入出生日期"></td>
                    </tr>

                    <tr>
                        <td class="td_left"><label for="checkcode" >验证码</label></td>
                        <td class="td_right"><input type="text" name="checkcode" id="checkcode" placeholder="请输入验证码">
                            <img id="img_check" src="img/verify_code.jpg">
                        </td>
                    </tr>


                    <tr>
                        <td colspan="2" id="td_sub"><input type="submit" id="btn_sub" value="注册"></td>
                    </tr>
                </table>

            </form>


        </div>

    </div>

    <div class="rg_right">
        <p>已有账号?<a href="#">立即登录</a></p>
    </div>


</div>


</body>
</html>