基于JavaScript實現(xiàn)窗口拖動效果

2019-11-19 17:52:29

字體：大中小

供稿：網(wǎng)友

寫法類似于上一篇，水平進度條拖拽，具體內(nèi)容如下

<!DOCTYPE html><html lang="en"><head>  <meta charset="UTF-8">  <title>Document</title>  <style>    *{      margin: 0;      padding: 0;    }    .nav{      width: 100%;      height: 20px;      background-color: #ccc;    }    .popup{      width: 300px;      height: 300px;      border: 1px solid red;      position: absolute;      left: 50%;      top: 50%;      margin-left: -150px;      margin-top: -150px;    }    .popup .title{      height: 20px;      width: 100%;      background: deeppink;      cursor: move;    }  </style>  </head><body>  <div class="nav">注冊信息</div>  <div class="popup" id="popupfather">    <div class="title" id="popupson">我是窗口標(biāo)題，可拖著我走</div>    <div class="content">我是窗口內(nèi)容</div>  </div>  <script>      var popupfather = document.getElementById('popupfather');    var popupson = document.getElementById('popupson');    popupson.onmousedown = function(event){      var event = event || window.event;      var that = this;      var x = event.clientX - popupfather.offsetLeft - 150; //當(dāng)前鼠標(biāo)點擊處相對于popupfather所在位置x ， -150 是處理margin值      var y = event.clientY - popupfather.offsetTop - 150; //當(dāng)前鼠標(biāo)點擊處相對于popupfather所在位置y      document.onmousemove = function(event){        var event = event || window.event;        popupfather.style.left = event.clientX - x + "px";        popupfather.style.top = event.clientY- y + "px";        window.getSelection ? window.getSelection().removeAllRanges() : document.selection.empty();      }    }    document.onmouseup = function(){      document.onmousemove = null;    }  </script></body></html>

效果圖：