jQuery implementation of div drag effect example analysis

jQuery implementation of div drag effect example analysis_jquery

WBOY

Release： 2016-05-16 15:14:41

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This article analyzes the implementation of div dragging effect with jQuery. Share it with everyone for your reference, the details are as follows:

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<title> New Document </title>
<script type="text/javascript" src="jquery-1.7.2.min.js"></script>
<style type="text/css">
/*模块拖拽*/
.drag{position:absolute;width:100px;height:100px;border:1px solid #ddd;background:#FBF2BD;text-align:center;padding:5px;top:100px;left:20px;cursor:move;}
</style>
<script type="text/javascript">
// 模块拖拽
$(function(){
var _move=false;//移动标记
var _x,_y;//鼠标离控件左上角的相对位置
  $(".drag").click(function(){
    //alert("click");//点击（松开后触发）
    }).mousedown(function(e){
    _move=true;
    _x=e.pageX-parseInt($(".drag").css("left"));
    _y=e.pageY-parseInt($(".drag").css("top"));
    $(".drag").fadeTo(20, 0.5);//点击后开始拖动并透明显示
  });
  $(document).mousemove(function(e){
    if(_move){
      var x=e.pageX-_x;//移动时根据鼠标位置计算控件左上角的绝对位置
      var y=e.pageY-_y;
      $(".drag").css({top:y,left:x});//控件新位置
    }
  }).mouseup(function(){
  _move=false;
  $(".drag").fadeTo("fast", 1);//松开鼠标后停止移动并恢复成不透明
 });
});
</script>
</head>
<body>
<!--模块拖拽--> <div class="drag">这个可以拖动哦 ^_^</div>
</body>
</html>

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$("#question_pic").bind("click",function(event){
  event.stopPropagation(); //防止冒泡事件响应
  $("#chat_question").hide("slow");
});

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$("#chatLineHolder").scrollTop(10000);
//保持最下一行，不用滚

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Readers who are interested in more jQuery-related content can check out the special topics on this site: "JQuery drag effects and techniques summary", "jQuery common classic special effects summary", " jQuery extension skills summary", "jquery selector usage summary" and "jquery common operation skills summary"

I hope this article will be helpful to everyone in jQuery programming.