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  • js实现表单验证

    <!DOCTYPE html>
    <html>
    <head lang="en">
        <meta charset="UTF-8">
        <title></title>
        <script type="application/javascript">
            //验证码
            function createCode(){
                var code =  Math.floor(Math.random()*9000+1000)
                var span = document.getElementById("codeSpan")
                span.innerHTML=code
                return code
            }
            //验证用户名
            function codeUser(){
                return codedata("user",/^[u4e00-u9fa5]{2,4}$/)
            }
            //验证密码
            function codePassword(){
                return  codedata("password",/^(?:d+|[a-zA-Z]+|[!@#$%^&*]+)$/)
                return codePassword2()
            }
            //校验密码
            function codePassword2(){
                //获取第一次密码
                var pwd =document.getElementById("password").value
                //获取第二次密码
                var pwd2 =document.getElementById("password2").value
                //比较两次密码是否相同
                var span =document.getElementById("password2Span")
                if(pwd2==""||pwd2==null){
                    span.innerHTML="确认密码不能为空"
                    return false
                }else if(pwd2=pwd){
                    span.innerHTML="ok"
                    return true
                }else{
                    span.innerHTML="两次密码不一致"
                    return false
                }
            }
            //验证手机号
            function codePhone(){
                return codedata("phone",/^[+]{0,1}(d){1,3}[ ]?([-]?((d)|[ ]){1,12})+$/)
            }
            //验证邮箱
            function codeEmail(){
                 return codedata("email",/^[A-Za-zd]+([-_.][A-Za-zd]+)*@([A-Za-zd]+[-.])+[A-Za-zd]{2,4}$/)
            }
            //封装
            function codedata(a,reg1){
                //获取用户的用户信息
                var user = document.getElementById(a).value
                var span = document.getElementById(a+"Span")
                var alt = document.getElementById(a).alt
                //创建校验规则
                var reg=reg1;
                //校验
                if(user==""|| user==null){
                    span.innerHTML=alt+"不能为空"
                    return false
                }else if(reg.test(user)){
                    span.innerHTML=alt+"ok"
                    return true
                }else{
                    span.innerHTML=alt+"不符合规则"
                    return false
                }
            }
    
            //验证籍贯
            function codeCity(){
                //获取用户选择的数据
                var sel=document.getElementById("city").value;
    
                //获取span
                var span=document.getElementById("citySpan");
                //校验
                if(sel!=0){
                    span.innerHTML="籍贯选择成功"
                    return true
                }else{
                    span.innerHTML="籍贯不能为空"
                    return false
                }
            }
            //验证爱好
            function codeHobby(){
                //获取爱好
                var hobbys = document.getElementsByName("hobby")
                var span = document.getElementById("hobbySpan")
                for(var i =0;i<hobbys.length;i++){
                    if(hobbys[i].checked){
                        span.innerHTML="选择爱好成功"
                        return true
                    }
                }
                span.innerHTML="爱好至少选择一项"
                return false
            }
            //校验是否同意公司协议
            function checkAgree(){
    
                document.getElementById("zc").disabled=!document.getElementById("agree").checked;
            }
            //提交判断
            function checkSub(){
                codeUser();
                codePassword();
                codePassword2();
                codePhone();
                codeEmail();
                codeCity();
                codeHobby();
                return codeUser()&&codePassword()&&codePassword2()&&codePhone()&&codeEmail()&&codeCity()&&codeHobby();
            }
        </script>
    </head>
    <body onload="createCode()">
        <div>
            <form name="" action="demo01.html" onsubmit="return checkSub()">
                用户名:<input type="text" name="user" id="user" value="" onblur="codeUser()" alt="用户名"><span id="userSpan"></span><br>
                密码:<input type="password" name="password" id="password" onblur="codePassword()" alt="密码"><span id="passwordSpan"></span><br>
                确认密码:<input type="password" name="password2" id="password2" onblur="codePassword2()"><span id="password2Span"></span><br>
                手机号:<input type="text" name="phone" id="phone" alt="手机号" onblur="codePhone()" alt="手机号"><span id="phoneSpan"></span><br>
                邮箱:<input type="text" name="email" id="email" alt="邮箱" onblur="codeEmail()"><span id="emailSpan"></span><br>
                性别: 男<input type="radio" name="sex" id="man" checked="checked"> &nbsp;&nbsp;<input type="radio" name="sex" id="feman"><br>
                籍贯:<select id="city" name="city" onchange="codeCity()">
                        <option value="0">-请选择-</option>
                        <option value="1">广州</option>
                        <option value="2">上海</option>
                        <option value="3">北京</option>
                     </select><span id="citySpan"></span><br>
                爱好:<input type="checkbox"name="hobby" value="lol" onclick="codeHobby()">LOL &nbsp;
                <input type="checkbox"name="hobby" value="sleep"  onclick="codeHobby()">睡觉 &nbsp;
                <input type="checkbox"name="hobby" value="eat"  onclick="codeHobby()">吃饭 &nbsp;
                <input type="checkbox"name="hobby" value="listen"  onclick="codeHobby()">听歌 &nbsp;
                <span id="hobbySpan"></span>
                <br>
                个人介绍:<textarea name="inc"></textarea><br>
                验证码:<input type="text" name="code" id="code" ><span id="codeSpan" onclick="createCode()"></span><br>
                <input type="checkbox"name="agree" id="agree" onclick="checkAgree()" >是否同意本公司协议<br>
                <input type="submit" name="zc" id="zc" value="立即注册" disabled="disabled">
            </form>
        </div>
    </body>
    </html>
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  • 原文地址:https://www.cnblogs.com/vieta/p/10831327.html
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