js模态框案例

WEB-API 第7天05拖拽的对话框

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<!DOCTYPE html>
<html>
<head lang="en">
  <meta charset="UTF-8">
  <title></title>
  <style>
    .login-header {
      width: 100%;
      text-align: center;
      height: 30px;
      font-size: 24px;
      line-height: 30px;
    }

    ul, li, ol, dl, dt, dd, div, p, span, h1, h2, h3, h4, h5, h6, a {
      padding: 0px;
      margin: 0px;
    }

    .login {
      width: 512px;
      position: absolute;
      border: #ebebeb solid 1px;
      height: 280px;
      left: 50%;
      right: 50%;
      background: #ffffff;
      box-shadow: 0px 0px 20px #ddd;
      z-index: 9999;
      margin-left: -250px;
      margin-top: 140px;
      display: none;
    }

    .login-title {
      width: 100%;
      margin: 10px 0px 0px 0px;
      text-align: center;
      line-height: 40px;
      height: 40px;
      font-size: 18px;
      position: relative;
      cursor: move;
      -moz-user-select: none; /*火狐*/
      -webkit-user-select: none; /*webkit浏览器*/
      -ms-user-select: none; /*IE10*/
      -khtml-user-select: none; /*早期浏览器*/
      user-select: none;
    }

    .login-input-content {
      margin-top: 20px;
    }

    .login-button {
      width: 50%;
      margin: 30px auto 0px auto;
      line-height: 40px;
      font-size: 14px;
      border: #ebebeb 1px solid;
      text-align: center;
    }

    .login-bg {
      width: 100%;
      height: 100%;
      position: fixed;
      top: 0px;
      left: 0px;
      background: #000000;
      filter: alpha(opacity=30);
      -moz-opacity: 0.3;
      -khtml-opacity: 0.3;
      opacity: 0.3;
      display: none;
    }

    a {
      text-decoration: none;
      color: #000000;
    }

    .login-button a {
      display: block;
    }

    .login-input input.list-input {
      float: left;
      line-height: 35px;
      height: 35px;
      width: 350px;
      border: #ebebeb 1px solid;
      text-indent: 5px;
    }

    .login-input {
      overflow: hidden;
      margin: 0px 0px 20px 0px;
    }

    .login-input label {
      float: left;
      width: 90px;
      padding-right: 10px;
      text-align: right;
      line-height: 35px;
      height: 35px;
      font-size: 14px;
    }

    .login-title span {
      position: absolute;
      font-size: 12px;
      right: -20px;
      top: -30px;
      background: #ffffff;
      border: #ebebeb solid 1px;
      width: 40px;
      height: 40px;
      border-radius: 20px;
    }


  </style>
</head>
<body>
<div class="login-header"><a id="link" href="javascript:void(0);">点击,弹出登录框</a></div>
<div id="login" class="login">
  <div id="title" class="login-title">登录会员
    <span><a id="closeBtn" href="javascript:void(0);" class="close-login">关闭</a></span></div>
  <div class="login-input-content">
    <div class="login-input">
      <label>用户名:</label>
      <input type="text" placeholder="请输入用户名" name="info[username]" id="username" class="list-input">
    </div>
    <div class="login-input">
      <label>登录密码:</label>
      <input type="password" placeholder="请输入登录密码" name="info[password]" id="password" class="list-input">
    </div>
  </div>
  <div id="loginBtn" class="login-button"><a href="javascript:void(0);" id="login-button-submit">登录会员</a></div>
</div><!--登录框-->
<div id="bg" class="login-bg"></div><!--遮挡层-->
<script src="common.js"></script>

<script>
  //1.获取元素
  var login = document.querySelector('.login');  //外层盒子
  var mask = document.querySelector('.login-bg');//遮挡层
  var link = document.querySelector('#link'); // a连接弹出对话框
  var closeBtn = document.querySelector('#closeBtn');//关闭按钮
  var title = document.querySelector('#title'); //拖动盒子

  //2.点击事件弹出连接link 让mask 和 login显示出来
  link.addEventListener('click', function(){
    mask.style.display = 'block';
    login.style.display = 'block';
  });

  //3. 点击关闭按钮隐藏
  closeBtn.addEventListener('click', function(){
    mask.style.display = 'none';
    login.style.display = 'none';
  });

  //4.开始拖拽
  //4-1 按下鼠标,获得鼠标盒子内的坐标
  title.addEventListener('mousedown', function(e){
      var x = e.pageX - login.offsetLeft;
      var y = e.pageY - login.offsetTop;
      //4-2 鼠标移动时候,用鼠标在页面中的坐标减去鼠标在盒子内的坐标就是模态框的left和top值
      document.addEventListener('mousemove', move)

      function move(e){
        login.style.left = e.pageX - x +250 + 'px';  // 250  偏移量
        login.style.top = e.pageY - y -140 + 'px';   // 140 偏移量
      }
      //4-3 鼠标弹起,让鼠标移除移动事件
      document.addEventListener('mouseup', function(){
        document.removeEventListener('mousemove', move);
      });
  });;


</script>

</body>
</html>
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