jquery uses drag effect to achieve free drag div_jquery

Accidentally saw the previous do a simple div drag-and-drop effect, modified a little bit of comment, after testing the perfect through the firefox/chrome/ie6-11, now to share.

First of all, the implementation of the principles and points, the main three steps. The first step is to MouseDown the event, when the mouse MouseDown the mouse x and y axes and the left and top of the drag box, and assign true to the drag tag, which means the drag action is ready. The second step is the MouseMove event, where the x and y axes of the mouse are dynamically fetched and then calculated to drag the new left and top of the box and assign a value to drag and drop the effect. The third step is the MouseUp event, the mouse to play when the drag tag value false, drag and drop action completed.

The HTML code is as follows:

<div class= "Divwrap" id= "move1" style= "width:200px"; height:200px; Background:green; border:1px solid red; Position:absolute; top:100px; left:100px; Cursor:move; -moz-user-select:none; -webkit-user-select:none; " ></div>
<div class= "Divwrap" style= width:200px; height:200px Background:brown Red ; Position:absolute; top:300px; left:100px; " >
  
 
 

The

JS code is as follows:

(function ($) {$.fn.dragdiv = function (divwrap) {return This.each (function () {var $divMove = $ (this);/mouse can be dragged Drag region var $divWrap = divwrap?
      $divMove. Parents (Divwrap): $divMove//The entire mobile region var MX = 0, my = 0;//define mouse x axis y axis var DX = 0, DY = 0;//define div left, upper position var isdown = false;//mousedown Tag if (document.attachevent) {//ie event listener, stop selection when dragging Div, Firefox and Chrome have been set in CSS-moz-us Er-select:none;
        -webkit-user-select:none;
        $divMove [0].attachevent (' onselectstart '), function () {return false;
      });
        $divMove. MouseDown (function (event) {var event = Event | | window.event;
        MX = Event.clientx;
        my = Event.clienty;
        DX = $divWrap. Offset (). Left;
        DY = $divWrap. Offset (). Top;
      Isdown = true;//Mouse Drag start});
        $ (document). MouseMove (function (event) {var event = Event | | window.event;
 var x = x-axis var y when event.clientx;//mouse slide = event.clienty;//Y-axis if (Isdown) {         $divWrap. css ({"Left": X-mx + DX, "top": Y-my + DY});//div dynamic position Assignment}});
    $divMove. MouseUp (function () {Isdown = false;//mouse Drag end});
  });
};
}) (JQuery);

 $ (document). Ready (function () {$ (#move1). Dragdiv ()//Drag the entire div $ ("#move2"). Dragdiv (". Divwrap");//drag Div head});

Finally, to explain, before beginning to drag and drop action, to prohibit the selection of content, or affect the drag effect. Firefox and Chrome can be set via CSS: {-moz-user-select:none;-webkit-user-select:none;},ie could have written a onselectstart= directly in HTML. return false ", but it seems that the chrome has been a bit affected, so decided to cancel the writing, and then in JS for IE browser to write a onselectstart event.

This widget is simply a drag-and-drop effect, but the compatibility is good, which also used some knowledge points and skills. Of course, you can also use this plugin or the idea inside to continue to expand, write a more complete drag-and-drop plug-ins (such as: Draggable and droppable).

The above mentioned is the entire content of this article, I hope you can enjoy.