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

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

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May 16, 2016 pm 03:15 PM

jqueryDrag and drop sort

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>

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.

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