jQuery實(shí)現(xiàn)的簡單對話框拖動功能示例

更新時間：2018年06月05日 08:43:19 作者：前端愛我

這篇文章主要介紹了jQuery實(shí)現(xiàn)的簡單對話框拖動功能,涉及jQuery事件響應(yīng)、數(shù)值運(yùn)算及頁面元素屬性動態(tài)操作相關(guān)實(shí)現(xiàn)技巧,需要的朋友可以參考下

本文實(shí)例講述了jQuery實(shí)現(xiàn)的簡單對話框拖動功能。分享給大家供大家參考，具體如下：

<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
<title>www.dhdzp.com jquery 拖動</title>
<meta name="description" content="">
<meta name="keywords" content="">
<link href="" rel=" rel="external nofollow" stylesheet">
<style>
  *{margin: 0;padding: 0;box-sizing: border-box;-moz-user-select:none;}
  body {font: 12px/16px bold 'microsoft yahei,微軟雅黑';}
  .dragContainer {
    width: 382px;
    height: 395px;
     position: absolute;
    top: 50%;
    left: 50%;
    border: 1px solid red;
    margin-left: -191px;
    margin-top: -197.5px;
  }
  .dragContainer .dragtitle {
   width: 100%;
   height: 35px;
   border-bottom: 1px solid red;
   text-align: center;
   line-height: 35px;
  }
  .dragContainer .dragtitle:hover {
    cursor: move;
  }
  .dragContainer .content {
    width: 100%;
    height: 360px;
  }
  p.buttonGroup {
     width: 100%;
    text-align: center;
     position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 5px;
    border-top: 1px solid red;
  }
  p.buttonGroup input {
    padding: 5px 10px;
    color: white;
  }
  p.buttonGroup input:hover {
    cursor: pointer;
    cursor: hand;
  }
  p.buttonGroup input:first-child {
    margin-left: 25px;
    background: blue;
  }
  p.buttonGroup input.btn2 {
    margin-left: 15px;
    background: red;
  }
  </style>
</head>
<body>
 <div class="dragContainer" id="drag" style="'position:absolute;" >
   <p class="dragtitle">標(biāo)題欄</p>
   <div class="content"></div>
   <p class="buttonGroup"><input type="button" value="確定"><input type="button" value="取消" class="btn2"></p>
 </div>
  <script src="http://cdn.bootcss.com/jquery/2.1.0/jquery.js"></script>
  <script type="text/javascript">
  var mydrag={
    mousePoint: {x:0,y:0}, //初始化坐標(biāo)
    drag: function(){
      var that=this; //保存當(dāng)前對象即(mydrag)，如果不保存，在mousedown()里訪問不了mydrag這個對象
      var targetid=$(".dragtitle");
      targetid.mousedown(function(event){
        var e=event;
        var offsetLeft=targetid.offset().left; //當(dāng)前div的左偏移距離
        var offsetTop=targetid.offset().top;  //當(dāng)前div的頂部偏移距離
          that.mousePoint.x=e.clientX-offsetLeft;//計(jì)算鼠標(biāo)點(diǎn)擊時離它自己div的橫向距離
        that.mousePoint.y=e.clientY-offsetTop;  //計(jì)算鼠標(biāo)點(diǎn)擊時離它自己div的縱向距離
        $(document).bind('mousemove',move);
        e.stopPropagation();
      });
      function move(event){
          var e =event;
          var Left=e.clientX-that.mousePoint.x; //移動后，重新計(jì)算左偏移和頂部偏移距離
          var Top=e.clientY-that.mousePoint.y;
          $("#drag").css({'top':Top,'left':Left,'margin':0});
          $(document).bind('mouseup',end);
          e.stopPropagation();
        };
        function end(event){
          var e = event;
             $(document).unbind('mousemove', move);
                $(document).unbind('mouseup',end);
          e.stopPropagation();
        };
    }
  }
  mydrag.drag();
  </script>
</body>
</html>

使用在線HTML/CSS/JavaScript代碼運(yùn)行工具 http://tools.jb51.net/code/HtmlJsRun測試，運(yùn)行效果如下：