最近做了一個(gè)項(xiàng)目其中有項(xiàng)目需求涉及到訪問控制,在訪問需要登錄才能使用的頁面或功能時(shí),會彈出登錄框:
效果如下:

圖 1-點(diǎn)擊用戶名時(shí),如未登錄彈出登錄框
對這個(gè)功能的詳細(xì)描述:
不涉及到登錄時(shí),登錄框隱藏
涉及到登錄時(shí),登錄框彈出到頁面左上角
登陸成功后登錄框隱藏
實(shí)現(xiàn)思路:
在body結(jié)束標(biāo)簽之前插入登錄的div,設(shè)其定位方式為absolute,位置在左上角。
登錄框默認(rèn)的display屬性為none。觸發(fā)登錄時(shí),將該屬性改為block
附上示例代碼:
<!DOCTYPE html><html lang="en"><head>  <meta charset="UTF-8">  <title>Title</title></head><style>  h3{width:100%;padding-bottom:10px;border-bottom:2px solid #CCC;}  #close{position:absolute;top:2px;right:2px;}  #close span{padding:3px 10px;background-color: #999;font-size:20px;color:white;cursor:pointer;}  #log{display: none; width: 400px; height: 400px; padding: 30px 40px; background-color: #F3F5F6; position: fixed; top: 70px;; right: 30px;}  .error{float:right;color:red;font-size:1.2em;margin-right:10px}</style><link rel="stylesheet" ><script src="http://cdn.bootcss.com/jquery/1.11.3/jquery.min.js"></script><script src="http://cdn.bootcss.com/bootstrap/3.3.5/js/bootstrap.min.js"></script><body><button onclick="document.getElementById('log').style.display='block'">彈出登錄框</button><div id="log">  <form action="../control/logincheck.php" method="post">    <h3 >請登錄</h3>    <div class="form-group">      <label for="username">用戶名*</label>      <span id="user" class="error"> </span>      <input type="text" class="form-control" name="username"          id="username" placeholder="用戶名" onblur='checkName()' required />    </div>    <div class="form-group">      <label for="password">密碼*</label>      <span id="psword" class="error"> </span>      <input type="password" class="form-control"          name="password"          id="password" placeholder="密碼" onblur='checkPassword()' required />    </div>    <div class="checkbox">      <label>        <span><input type="checkbox" value='true' style="width:15px;height:15px;" > 記住我</span>      </label>    </div>    <input type="submit" class="btn btn-primary login-button" value="登錄" style="width:70px;height:40px;" />    <p class="text-success" ><a href="register.html">>>還沒賬號?去注冊</a></p>  </form>  <div id="close" >    <span onclick="document.getElementById('log').style.display='none'">關(guān)閉</span>  </div></div><script>  var checkName=function() {    document.getElementById("user").innerHTML ="";    var name = eval(document.getElementById('username')).value;    if (name.length > 20 || name.length < 1)      document.getElementById("user").innerHTML = "用戶名長度在1-20之間!" ;  }  var checkPassword = function(){    document.getElementById("psword").innerHTML ="";    var name = eval(document.getElementById('password')).value;    if (name.length > 12 || name.length < 6)      document.getElementById("psword").innerHTML="密碼長度在6-12之間!" ;  }</script></body></html>一種完全用AngularJS實(shí)現(xiàn)驗(yàn)證和提示的方法:
<!DOCTYPE html><html><head><meta charset="utf-8"><script src="http://apps.bdimg.com/libs/angular.js/1.4.6/angular.min.js"></script></head><body><h2>驗(yàn)證實(shí)例</h2><form ng-app="myApp" ng-controller="validateCtrl" name="myForm" novalidate><p>用戶名:<br><input type="text" name="user" ng-model="user" required><span style="color:red" ng-show="myForm.user.$dirty && myForm.user.$invalid"><span ng-show="myForm.user.$error.required">用戶名是必須的。</span></span></p><p>郵箱:<br><input type="email" name="email" ng-model="email" required><span style="color:red" ng-show="myForm.email.$dirty && myForm.email.$invalid"><span ng-show="myForm.email.$error.required">郵箱是必須的。</span><span ng-show="myForm.email.$error.email">非法的郵箱地址。</span></span></p><p><input type="submit"ng-disabled="myForm.user.$dirty && myForm.user.$invalid || myForm.email.$dirty && myForm.email.$invalid"></p></form><script>var app = angular.module('myApp', []);app.controller('validateCtrl', function($scope) {  $scope.user = '輸入用戶名';  $scope.email = '輸入密碼';});</script></body></html>以上所述是小編給大家介紹的Bootstrap彈出帶合法性檢查的登錄框?qū)嵗a【推薦】,希望對大家有所幫助,如果大家有任何疑問請給我留言,小編會及時(shí)回復(fù)大家的。在此也非常感謝大家對武林網(wǎng)網(wǎng)站的支持!
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