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JS如何實現校驗與最終登陸界面功能

發布時間:2021-09-28 14:01:59 來源:億速云 閱讀:143 作者:小新 欄目:開發技術

小編給大家分享一下JS如何實現校驗與最終登陸界面功能,希望大家閱讀完這篇文章之后都有所收獲,下面讓我們一起去探討吧!

具體如下:

<html>    <head>        <title>注冊頁面</title>        <meta charset="UTF-8"/>        <script type="text/javascript">//            校驗用戶名            function checkUname(){//                獲取用戶名對象                var uname=document.getElementById("uname").value;//                創建校驗正則表達式判斷條件                var reg=/^[\u4e00-\u9fa5]{2,4}$/;     //其中前面的一部分是漢字的正則表達式,后面的是漢字的合法范圍,(第一次因為,正則表達式寫錯了)//                獲取后面的提示字                var nameSpan=document.getElementById("nameSpan"); //span是一個沒有特殊含義的自定義標簽用來輔助設計//                進行校驗                if(uname=="" || uname ==null){                    nameSpan.innerHTML="用戶名不能為空";                    nameSpan.style.color="red";                    return false;                }else if(reg.test(uname)){                    nameSpan.innerHTML="用戶名合法";                    nameSpan.style.color="green";                    return true;                }else{                    nameSpan.innerHTML="用戶名不合法";                    nameSpan.style.color="red";                    return false;                }            }            function checkPassword(){//                獲取用戶名對象                var password1=document.getElementById("pws1").value; //我們是通過對象的value值(文本輸入框的內容)進行判斷的//                創建校驗正則表達式判斷條件                var reg=/^[a-z]\w{4,8}$/;     //首位為字母,后面為數字4到8位 ()//                獲取后面的提示字                var pwsSpan=document.getElementById("passwordSpan"); //span是一個沒有特殊含義的自定義標簽用來輔助設計//                進行校驗                if(password1=="" || password1 ==null){                    pwsSpan.innerHTML="*密碼不能為空";                    pwsSpan.style.color="red";                    return false;                }else if(reg.test(password1)){                    pwsSpan.innerHTML="*密碼合法";                    pwsSpan.style.color="green";                    return true;                }else{                    pwsSpan.innerHTML="*密碼不合法";                    pwsSpan.style.color="red";                    return false;                }//                return password1.value;                checkPassworded();   //在失去焦點的時候(調用該函數時,也進行確認密碼的校驗),如果沒有這個操作,當重新修改用戶密碼時,其不會在進行確認密碼(即修改密碼后即使不相同也不會報錯)            }            //            校驗確定密碼            function checkPassworded(){//            獲取確認密碼對象                var password2=document.getElementById("pws2").value;//            獲取第一次密碼對象,以進行比較                var password1=document.getElementById("pws1").value;//                獲取提示語的對象                var pwslSpan=document.getElementById("passwordlSpan");//                reg=checkPassword();//       if(reg="" || reg=null)         //沒能實現                if(password2=="" || password2==null){   //null就是字符串類型,表示空字符串                    pwslSpan.innerHTML="*確認密碼不能為空";                    pwslSpan.style.color="red";                    return false;                }else if(password1 == password2){                    pwslSpan.innerHTML="*兩次密碼相同";                    pwslSpan.style.color="green";                    return true;                }else{                    pwslSpan.innerHTML="*兩次密碼不相同";                    pwslSpan.style.color="red";                    return false;                }            }//--------------------------------------------------------------------------------------------------------//    考慮到有很多的校驗方法都用到相同的方法和結構,所以我們在此對其進行封裝            function checkAll(id,reg){      //封裝的基本思想:相同的直接寫入,不同的利用參數轉換                //接收傳遞的對象                var inp=document.getElementById(id);   //我們傳的參數是帶雙引號的                var ie=inp.value;           //我們通過對象的值進行判斷                var alt=inp.alt;             //通過對象來獲得其對應的一些值                //接收傳遞的提示框對象                var span=document.getElementById(id+"Span");                if(ie=="" || ie==null){                    span.innerHTML=alt+"不能為空";                    span.style.color="red";                    return false;                }else if(reg.test(ie)){                    span.innerHTML=alt+"合法";                    span.style.color="green";                    return true;                }else{                    span.innerHTML=alt+"不合法";                    span.style.color="red";                    return false;                }            }//            手機號的校驗            function checkPhone(){                return checkAll("phone",/^1[3,4,5,7,8]\d{9}$/);            }//            郵箱的校驗            function checkMail(){                return checkAll("mail",/^([a-zA-Z0-9_-])+@([a-zA-Z0-9_-])+(.[a-zA-Z0-9_-])+$/);            }//            添加驗證碼            function checkCode(){//                獲取驗證碼填寫對象                var code=document.getElementById("code1");//                獲取驗證顯示對象                var codeSpan=document.getElementById("codeSpan");                var tag=Math.floor(Math.random()*9000+1000);   //產生四位的整數,Math.floor表示向下取整,                codeSpan.innerHTML=tag;            }//            校驗驗證碼            function checkCoded(){//                獲取輸入的驗證碼對象                var code2=document.getElementById("code1").value;//                 獲取顯示的驗證碼對象,以進行比較                var codeSpan1=document.getElementById("codeSpan");                var code1=codeSpan1.innerHTML;       //通過對象利用其innerHTML屬性進行獲得,其利用value不正確,沒進一步探索//                獲取提示語的對象                var codeSpan2=document.getElementById("codeSpan2");//                alert(code1);       //得到的值是undefined//                alert(code2);                if(code2=="" || code2==null){                    codeSpan2.innerHTML="*驗證碼不能為空";                    codeSpan2.style.color="red";                    return false;                }else if(code1 == code2){                    codeSpan2.innerHTML="*驗證碼相同";                    codeSpan2.style.color="green";                    return true;                }else{                    codeSpan2.innerHTML="*驗證碼不相同";                    codeSpan2.style.color="red";                    return false;                }            }//            校驗選擇框            function checkSelect(){//                獲取選擇框對象                var select=document.getElementById("select").value;//                獲取選擇框提示對象                var selectSpan=document.getElementById("selectSpan");//                selectSpan.style.fontSize="15px";                if(select==0){                    selectSpan.innerHTML="地址選擇不能為空";                    selectSpan.style.color="red";                    return false;                }else{                    selectSpan.innerHTML=select;                    selectSpan.style.color="green";                    return true;                }            }//            檢測多選框            function checkFav(){//                獲取多選框對象                var fav=document.getElementsByName("fav");//                獲取多選框提示對象                var favSpan=document.getElementById("favSpan");                favSpan.style.fontSize="10px";                for(var i=0;i<fav.length;i++){                    if(fav[i].checked){ //fav[i]是一個對象,fav[i].checked是一個值                        favSpan.innerHTML="選擇成功";                        favSpan.style.color="green";                        return true;       //選擇成功后直接返回                    }                }                 //在整個循環結束后都沒有進行選擇,才進行不符合提示                favSpan.innerHTML="至少選擇一個";                favSpan.style.color="red";                return false;            }            function checkAgree(){//                當同意公司協議的時候才能進行提交操作                document.getElementById("pop").disabled=!document.getElementById("agree").checked;//                當同意公司協議的時候,對應的submit的對應值是true,所以我們利用!把disabled的值賦值為false            }            function checkSub(){//                校驗是否可以提交//                對于所有的校驗函數,只要有一個不滿足條件,就不能提交                checkUname();                checkPassword();                checkPassworded();                checkPhone();                checkMail();                checkCoded();                checkSelect();                checkFav();        //當所有值都為true的時候才能進行提交,所以對應的函數有返回值,不滿足時返回false,滿足時返回true                return checkUname()&&checkPassword()&&checkPassworded()&&checkPhone()&&checkMail()&&checkCoded()&&checkSelect()&&checkFav();            }        </script>        <style type="text/css">            tr,td,table{                background-color: transparent;                border 0px;            }            span{                font-size: 10px;            }            #codeSpan{              width: 30px;              height: 25px;                font-size: 20px;                color: black;                background-size: 100%,100%;      /*后面三行是使背景圖片占滿整個區域*/                background-repeat: no-repeat;                background-image: url(../img/0.jpg);            }            #selectSpan{                font-size: 15px;            }            #showp{                width: 30%;                height: 100%;                background-image: url(../img/5.jpg);                background-size: cover;                background-repeat: no-repeat;                margin-left: 33%;            }            input,select,[type=checkbox],#bigText{                background-color: transparent;   /* 把一些邊框背景變為透明的以顯示背景*/            }        </style>    </head>    <body onload="checkCode(),checkSelect(),checkFav()">        <form action="#" action="get">            <p align="center" id="showp">            <table border="1px" cellpadding="5px" cellspacing="0px">                <tr height="29px">                    <td width="80px">姓名</td>                    <td width="180px">                        <input type="text" name="uname" value="" id="uname" onblur="checkUname()"/>                        <span id="nameSpan"></span>  <!-- 以焦點的有無來進行判斷-->                    </td>                </tr>                <tr height="29px">                    <td width="80px">郵箱</td>                    <td width="180px">                        <input type="text" name="mail" value="" id="mail" alt="郵箱" onblur="checkMail()"/>                        <span id="mailSpan"></span>                    </td>                </tr>                <tr height="29px">                    <td width="80px">手機號</td>                    <td width="180px">      <!--查了很長時間的錯誤,就因為調用的函數沒有用""包含,""在外面了-->                        <input type="text" name="phone" value="" id="phone" alt="手機號" onblur="checkPhone()"/>                        <span id="phoneSpan"></span>                    </td>                </tr>                <tr height="31px">                    <td width="80px">密碼</td>                    <td width="180px">                        <input type="password" name="psw" value="" id="pws1" onblur="checkPassword()"/>                        <span id="passwordSpan"></span>                    </td>                </tr>                <tr height="29px">                    <td width="80px">確認密碼</td>                    <td width="180px">                        <input type="password" name="psw2" value="" id="pws2" onblur="checkPassworded()"/>                        <span id="passwordlSpan"></span>                    </td>                </tr>                <tr height="31px">                    <td>性別</td>                    <td>                        男<input type="radio" name="sex" value="1" checked="checked" /> 女<input type="radio" name="sex" value="0" />                    </td>                </tr>                <tr height="31px">                    <td>所在地</td>                    <td>                        <select name="" id="select" onchange="checkSelect()">                            <option value="0"></option>                            <option value="山東">山東</option>                            <option value="北京">北京</option>                            <option value="河南">河南</option>                        </select>                        <span id="selectSpan"></span>                    </td>                </tr>                <tr height="31px">                    <td>愛好</td>                    <td>               <!--我們對每一個都進行事件觸發檢驗,因為每個選項都是平等的-->                        動漫<input type="checkbox" name="fav" id="fav" onclick="checkFav()" value="animation"/>                        游戲<input type="checkbox" name="fav" id="fav" onclick="checkFav()" value="game" />                        打球<input type="checkbox" name="fav" id="fav" onclick="checkFav()" value="ball" />                        <span id="favSpan"></span>                    </td>                </tr>                <tr height="31px">                    <td>個人簡介</td>                    <td>                        <textarea name="introduction" rows="7px" cols="25px" id="bigText"></textarea>                    </td>                </tr>                <tr height="31px">                    <td width="80px">驗證碼</td>                    <td width="180px">                        <input type="password" name="code" value="" id="code1" onblur="checkCoded()"/>                        <span id="codeSpan" onclick="checkCode()"></span><br />                        <span id="codeSpan2" onclick="checkCoded()"></span>                        <!--<a href=""><span id=" rel="external nofollow" codeSpan" onclick="checkCode()"></span></a>-->  <!-- 行內顯示一定的距離,可以直接用-->                    </td>   <!--可以用a標簽把鼠標的圖標變成一個小手,但是會觸發超鏈接事件,感覺不提倡-->                </tr>                <tr height="31px">                    <td colspan="2" align="center">                        <input type="checkbox" name="select" id="agree" value="1" onclick="checkAgree()" />是否同意我們的協議                        <!--<input type="radio" name="select" id="agree" value="1" />是否同意我們的協議-->                        <!--radio是互斥選擇,當只有一個的時候,選中了,就取消不了了,要進行一些處理-->                    </td>                </tr>                <tr height="31px">                    <td colspan="2" align="center">                        <input type="submit" value="注冊" id="pop" disabled="true" onclick="checkSub()"/>                        <!--我們可不是所有的情況都可以進行submit-->                    </td>                </tr>            </table>            </p>        </form>    </body></html>

看完了這篇文章,相信你對“JS如何實現校驗與最終登陸界面功能”有了一定的了解,如果想了解更多相關知識,歡迎關注億速云行業資訊頻道,感謝各位的閱讀!

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