Simple implementation method of jquery drag and drop sorting (enhanced version)

Simple implementation method of jquery drag and drop sorting (enhanced version)_jquery

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Release： 2016-05-16 15:15:35

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The example in this article describes the simple implementation method of jquery drag and drop sorting. Share it with everyone for your reference, the details are as follows:

The screenshot of the running effect is as follows:

Originally, there was no new action. After analyzing the code, I found that it is easy to enhance~~

The code is as follows:

<!DOCTYPE HTML>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>测试的拖拽功能</title>
<style type="text/css">
body, div { margin: 0; paading: 0; font-size: 12px; }
body { width:100%; margin: 0 auto; }
ul, li { margin: 0; padding: 0; list-style: none; }
.clear { clear: both; width: 1px; height: 0px; line-height: 0px; font-size: 1px; }
.drag_module_box { width: 600px; height: auto; margin: 25px 0 0 0; padding: 5px; border: 1px solid #f00; }
.drag_module_box1 { width: 600px; height: auto; margin: 25px 0 0 0; padding: 5px; border: 1px solid #f00; }
.drag_module_main { position: static; width: 600px; height: 80px; margin-bottom: 5px; border: 1px solid blue; background: #ccc; }
.drag_module_maindash { position: absolute; width: 600px; height: 80px; margin-bottom: 5px; border: 1px dashed blue; background: #ececec; opacity: 0.7; }
.drag_module_hide { width: 600px; height: 80px; margin-bottom: 5px; }
.drag_module_dash { position: sta;tic; width: 600px; height: 80px; margin-bottom: 5px; border: 1px dashed #f00; };
</style>
<script type="text/javascript" src="jquery-1.7.2.min.js"></script>
<script type="text/javascript">
$(document).ready( function () {
   var range = { x: 0, y: 0 };//鼠标元素偏移量
   var lastPos = { x: 0, y: 0, x1: 0, y1: 0 }; //拖拽对象的四个坐标
   var tarPos = { x: 0, y: 0, x1: 0, y1: 0 }; //目标元素对象的坐标初始化
   var theDiv = null, move = false;//拖拽对象 拖拽状态
   var theDivId =0, theDivHeight = 0, theDivHalf = 0; tarFirstY = 0; //拖拽对象的索引、高度、的初始化。
   var tarDiv = null, tarFirst, tempDiv; //要插入的目标元素的对象, 临时的虚线对象
  function loopbox(){ //循环初始化
     $(".drag_module_box").find(".drag_module_main").each(function(){
      console.log( 'find' );
       $(this).mousedown(function (event){
         //拖拽对象
         theDiv = $(this);
         //鼠标元素相对偏移量
         range.x = event.pageX - theDiv.offset().left;
         range.y = event.pageY - theDiv.offset().top;
         theDivId = theDiv.index();
         theDivHeight = theDiv.height();
         theDivHalf = theDivHeight/2;
         move = true;
         theDiv.attr("class","drag_module_maindash");
         // 创建新元素 插入拖拽元素之前的位置(虚线框)
         $("<div class='drag_module_dash'></div>").insertBefore(theDiv);
       });
     });
  }
  loopbox();
   $(".drag_module_box").mousemove(function(event) {
    console.log( 'mousemove' );
     if (!move) return false;
     lastPos.x = event.pageX - range.x;
     lastPos.y = event.pageY - range.y;
     lastPos.y1 = lastPos.y + theDivHeight;
     // 拖拽元素随鼠标移动
     theDiv.css({left: lastPos.x + 'px',top: lastPos.y + 'px'});
     // 拖拽元素随鼠标移动 查找插入目标元素
     var $main = $('.drag_module_main'); // 局部变量：按照重新排列过的顺序 再次获取 各个元素的坐标，
     tempDiv = $(".drag_module_dash"); //获得临时 虚线框的对象
     $main.each(function () {
       tarDiv = $(this);
       tarPos.x = tarDiv.offset().left;
       tarPos.y = tarDiv.offset().top;
       tarPos.y1 = tarPos.y + tarDiv.height()/2;
       tarFirst = $main.eq(0); // 获得第一个元素
       tarFirstY = tarFirst.offset().top + theDivHalf ; // 第一个元素对象的中心纵坐标
       //拖拽对象 移动到第一个位置
       if (lastPos.y <= tarFirstY) {
           tempDiv.insertBefore(tarFirst);
       }
       //判断要插入目标元素的 坐标后， 直接插入
       if (lastPos.y >= tarPos.y - theDivHalf && lastPos.y1 >= tarPos.y1 ) {
         tempDiv.insertAfter(tarDiv);
       }
     });
   }).mouseup(function(event) {
    console.log( 'mouseup' );
    if(theDiv==null) return false;
     theDiv.insertBefore(tempDiv); // 拖拽元素插入到 虚线div的位置上
     theDiv.attr("class", "drag_module_main"); //恢复对象的初始样式
     $('.drag_module_dash').remove(); // 删除新建的虚线div
     move=false;
   });
   $("#drag_module_insert").click(function(){
    $("#drag_module_box1").html($("#drag_module_box1").html()+$("#drag_module_box2").html());
    loopbox();
   });
   $("#drag_module_seque").click(function(){
    $(".drag_module_box").find(".drag_module_main").each(function(){
      console.log($(this).attr('id'));
    });
   });
});
</script>
</head>
<body>
<div class="drag_module_box" id="drag_module_box1">
   <div class="drag_module_main" id="main1">div1</div>
   <div class="drag_module_main" id="main2">div2</div>
   <div class="drag_module_main" id="main3">div3</div>
   <div class="drag_module_main" id="main4">div4</div>
   <div class="drag_module_main" id="main5">div5</div>
   <div class="drag_module_main" id="main6">div6</div>
</div>
<div class="drag_module_box1" id="drag_module_box2">
  <div class="drag_module_main" id="main_first">div7</div>
</div>
<input type="button" value="新建" id="drag_module_insert"/>
<input type="button" value="确定" id="drag_module_seque"/>
</body>
</html>

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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 animation and special effects usage summary" and "jquery common operation skills summary"

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