案例5_表格全选和案例6_表单检验

案例5_表格全选：

<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>表格全选</title>
    <style>
        table{
            border: 1px solid;
            width: 500px;
            margin-left: 30%;
        }

        td,th{
            text-align: center;
            border: 1px solid;
        }
        div{
            margin-top: 10px;
            margin-left: 30%;
        }

        .over{
            background-color: #c982a3;
        }
        .out{
            background-color: #FFFFFF;
        }
    </style>

    <script>
            //1.在页面加载完后绑定事件
            window.onload = function (){
                //2.给全选按钮绑定单击事件
                document.getElementById("selectAll").onclick = function () {
                    //1.全选cb
                    let cbs = document.getElementsByName("cb");
                    //2.遍历
                    for (let i = 0; i <cbs.length; i++) {
                        //3.设置每一个cb的状态为选中 checked
                        cbs[i].checked = true;
                    }
                }

                //3.给全不选中绑定点击事件
                document.getElementById("unSelectAll").onclick = function () {
                    let cbs = document.getElementsByName("cb");
                    for (let i = 0; i < cbs.length; i++) {
                        cbs[i].checked = false;
                    }
                }

                //4.给反选绑定单击事件
                document.getElementById("selectRev").onclick = function () {
                    let cbs = document.getElementsByName("cb");
                    for (let i = 0; i < cbs.length; i++) {
                        //反选
                        cbs[i].checked = ! cbs[i].checked;
                    }
                }

                //第一个cb点击
                document.getElementById("first").onclick = function () {
                    let cbs = document.getElementsByName("cb");
                    //获取第一个cb
                    // alert(this);
                    //遍历
                    for (let i = 0; i < cbs.length; i++) {
                        //设置每一个cb的状态和第一个cb状态相同
                        cbs[i].checked = this.checked;
                    }
                }

                //给所有tr绑定鼠标移到元素之上和移出元素之上事件
                let trs = document.getElementsByTagName("tr");
                for (let i = 0; i < trs.length; i++) {
                    //移到元素之上
                    trs[i].onmouseover = function () {
                        this.className = "over";
                    }

                    //移除元素
                    trs[i].onmouseout = function () {
                        this.className = "out";
                    }
                }
            }
    </script>
</head>
<body>

<table>
    <caption>学生信息表</caption>

    <tr>
        <th><input type="checkbox" name="cb" id="first"></th>
        <th>编号</th>
        <th>姓名</th>
        <th>性别</th>
        <th>操作</th>
    </tr>

    <tr>
        <td><input type="checkbox" name="cb"></td>
        <td>1</td>
        <td>铁冷</td>
        <td>战士</td>
        <td><a href="javascript:void(0);">删除</a></td>
    </tr>

    <tr>
        <td><input type="checkbox" name="cb"></td>
        <td>2</td>
        <td>魔将</td>
        <td>恶魔</td>
        <td><a href="javascript:void(0);">删除</a></td>
    </tr>

    <tr>
        <td><input type="checkbox" name="cb"></td>
        <td>3</td>
        <td>一群</td>
        <td>?</td>
        <td><a href="javascript:void(0);">删除</a></td>
    </tr>

</table>
<div>
    <input type="button" id="selectAll" value="全选">
    <input type="button" id="unSelectAll" value="全不选">
    <input type="button" id="selectRev" value="反选">
</div>
</body>
</html>

 

 

 

 

 

案例6_表单检验：

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

代码实现：

<!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/regbg.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>
        window.onload = function () {
            //1、给表单绑定onsubmit事件
            document.getElementById("form").onsubmit = function () {
                //调用用户名校验方法 checkUsername();
                //调用密码校验方法 checkPassword();
                return checkUsername() && checkPassword();
            }

            //给用户名和密码框分别绑定离开焦点事件
            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}$/;
            //3、判断值是否符合正则的规则
            var flag = reg_username.test(username);
            //4、提示信息
            var s_username = document.getElementById("s_username");
            if (flag){
                //提示绿色对勾
                s_username.innerHTML = "<img width='35' height='25' src='img/gou.png'/>";
            }else {
                //提示红色的用户名有误
                s_username.innerHTML = "用户名格式有误";
            }
            return flag;
        }
        //校验密码
        function checkPassword() {
            //1、获取用户名的值
            var password = document.getElementById("password").value;
            //2、定义正则表达式
            var reg_password = /^\w{6,12}$/;
            //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 {
                //提示红色的用户名有误
                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="#" method="get" id="form">
                <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"> 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/vecode.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>

 

posted @ 2022-11-27 19:25  冰灵IT  阅读(12)  评论(0)    收藏  举报