jQuery implements a complete instance of a small scalable layer in the lower right corner

  • 2021-06-29 09:43:55
  • OfStack

An example of jQuery implementing a small, scalable layer in the lower right corner is presented.Share it for your reference, as follows:


<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN"
"http://www.w3.org/TR/html4/strict.dtd">
<html>
  <head>
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
    <title> Size Scalable Layer Test </title>
    <script type = "text/javascript" src="jquery-1.7.2.js"></script>
    <style type = "text/css">
      #fa{
        border:1px solid blue;
        overflow:auto;
        width:400px;
        height:400px;
      }
      #main{
        margin:0;
        padding:0;
        width:300px;
        height:280px;
        border:1px solid red;
      }
    </style>
    <script type = "text/javascript">
      $(function(){
        var div = getObj("main");
        div.onmousemove = function(e){
          var e = e || window.event;
          var posx = e.clientX;
          var posy = e.clientY;
          var l = div.offsetLeft;
          var t = div.offsetTop;
          var h = div.clientHeight;
          var w = div.clientWidth;
          var ol = l+w-10;
          var or = l+w+10;
          var ot = t+h-10;
          var ob = t+h+10;
          this.style.cursor = "";
          if(posx>ol && posx<or && posy >ot && posy<ob){
            div.style.cursor = "nw-resize";
          }
        }
        div.onmousedown = function(e){
          var e = e || window.event;
          var initX = e.clientX;
          var initY = e.clientY;
          var l = div.offsetLeft;
          var t = div.offsetTop;
          var h = div.clientHeight;
          var w = div.clientWidth;
          var ol = l+w-10;
          var or = l+w+10;
          var ot = t+h-10;
          var ob = t+h+10;
          if(initX>ol && initX<or && initY >ot && initY<ob){
            document.onmousemove = function(evt){
              var e = evt || window.event;
              var currX = e.clientX;
              var currY = e.clientY;
              div.style.width = w + (currX - initX)+"px";
              div.style.height = h+(currY-initY)+"px";
            }
            document.onmouseup = function(){
              document.onmousemove = null;
              document.onmouseup = null;
            }
          }
        }
      });
      function getObj(id){
        return document.getElementById(id);
      }
    </script>
  </head>
  <body>
    <div id = "fa">
      <div id = "main"></div>
    </div>
  </body>
</html>

After encapsulation:


function resize(div){
  div.mousemove(function(e){
    var e = e || window.event;
    var posx = e.clientX;
    var posy = e.clientY;
    var l = div.offset().left;
    var t = div.offset().top;
    var h = div.height();
    var w = div.width();
    var ol = l+w-10;
    var or = l+w+10;
    var ot = t+h-10;
    var ob = t+h+10;
    $(this).css("cursor","");
    if(posx>ol && posx<or && posy >ot && posy<ob){
      $(this).css("cursor","nw-resize");
    }
  });
  div.mousedown(function(e){
    var e = e || window.event;
    var posx = e.clientX;
    var posy = e.clientY;
    var l = div.offset().left;
    var t = div.offset().top;
    var h = div.height();
    var w = div.width();
    var ol = l+w-10;
    var or = l+w+10;
    var ot = t+h-10;
    var ob = t+h+10;
    if(posx>=ol && posx<=or && posy >=ot && posy<=ob){
      document.onmousemove = function(e){
        var e = e || window.event;
        var currX = e.clientX;
        var currY = e.clientY;
        div.width(w + (currX - posx));
        div.height(h+(currY-posy));
      }
      $(document).mouseup(function(){
        document.onmousemove = null;
      });
    }
  });
}

More readers interested in jQuery-related content can view this site's topics: Summary of jQuery Table (table) Operational Skills, Summary of jQuery Common Plug-ins and Usages, Summary of Ajax Usage in jquery, Summary of jQuery Dragging Effects and Skills, Summary of jQuery Extended Skills, Summary of jQuery Common Classic Special Effects,jQuery Animation and Utility Summary and jquery Selector Usage Summary

I hope that the description in this paper will be helpful to everyone's jQuery program design.


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