How to use jquery to move left, right, up and down

This time I will show you how to use jquery to realize the left and right movement function, and what are the precautions for using jquery to realize the left and right movement function. The following is a practical case, let's take a look.

When I made reports recently, I directly exported all the fields, but this was not very flexible. I recall what the teacher said about making report reports for projects as follows. The function of moving left, right, up and down can be flexibly controlled, so I gave it a try.

js code

function selected(thiz) 
{ 
 var name = thiz.name; 
 if(name=="right") 
  $("select[name='left']").val(""); 
 else 
  $("select[name='right']").val(""); 
} 
function Shift(thiz) 
{ 
 var right = $("select[name='right']"); 
 var left = $("select[name='left']"); 
 if(thiz=="left" && right.val() != ""){ 
  lrShift(right,left); 
 }else if(thiz=="right" && left.val() != ""){ 
  lrShift(left,right); 
 } 
 
 //获取选中的值 
} 
//从dest移动到target 
function lrShift(dest,target) 
{ 
 var childrens = dest.children(); 
 var args = ""; 
 //alert(dest.val()); 
 var dests = dest.val() 
 for(var x = 0; x < dests.length; x++) 
 { 
  var vaTemp = dests[x]; 
  target.append("<option value=&#39;"+vaTemp+"&#39;>"+vaTemp+"</option>");//追加 
  target.find("option[value='"+vaTemp+"']").attr("selected",true);//给追加获取焦点 
  for(var y = 0; y <childrens.length;y++ )//删除选中的元素 
  { 
   if(childrens.get(y).value==vaTemp) 
    $(childrens.get(y)).remove(); 
  } 
 } 
 dest.val(""); 
} 
function ShiftValue(address) 
{ 
 var right = $("select[name=&#39;right&#39;]"); 
 var left = $("select[name=&#39;left&#39;]"); 
 if(right.val()!=null) 
  shift(right,address); 
 else if(left.val()!=null) 
  shift(left,address); 
} 
function shift(obj,address){ 
  //获取选中的值 
  var objData = obj.val(); 
  var childrens = obj.children(); 
  var strs = ""; 
  for(var x = 0; x < objData.length; x++) 
  { 
   strs+="@"+objData[x]; 
  } 
 
  //获取要添加位置对象 
  var temp = null; 
  if(address=="top"){ 
   var number = findSelect(childrens,objData[0]); 
   if((--number) < 0) 
    return; 
   temp = childrens.get(number); 
  } 
  else{ 
   var number = findSelect(childrens,objData[objData.length-1]); 
   if((++number) > childrens.length-1) 
    return; 
   temp = childrens.get(number); 
  } 
 
  //删除选中的值 
  var n = 0; 
  var buffer = new Array(childrens.length-objData.length); 
  for(var x = 0; x < childrens.length;x++) 
  { 
   var value = childrens.get(x).value; 
   if(strs.indexOf(value)==-1) 
    buffer[n++] = value; 
  } 
 
  //添加新排序的值 
  obj.empty(); 
  if(address=="top") 
  { 
   for(var y = 0; y < buffer.length;y++) 
   { 
    if(buffer[y]==temp.value) 
    { 
     for(var x = 0; x < objData.length ; x++) 
     { 
      obj.append("<option>"+objData[x]+"</option>"); 
     } 
    } 
    obj.append("<option>"+buffer[y]+"</option>"); 
   } 
  }else{ 
   for(var y = 0; y < buffer.length;y++) 
   { 
    obj.append("<option>"+buffer[y]+"</option>"); 
    if(buffer[y]==temp.value) 
    { 
     for(var x = 0; x < objData.length; x++) 
     { 
      obj.append("<option>"+objData[x]+"</option>"); 
     } 
    } 
   } 
  } 
  //选中值 
  obj.val(objData); 
} 
function findSelect(selects,objValue) 
{ 
 var number = -1; 
 for(var x = 0; x < selects.length; x++) 
 { 
  if(objValue==selects.get(x).value) 
   number = x; 
 } 
 return number; 
}

Page call

<p> 
  <p> 
   <b>未导出字段</b> 
  </p> 
  <p style="float:left;"> 
   <select name="left" multiple="multiple" onchange="selected(this)" style="height:350px;width:200px;"> 
    <option value="姓名">姓名</option> 
    <option value="快件号">快件号</option> 
    <option value="快递公司">快递公司</option> 
    <option value="首重">首重</option> 
    <option value="续重">续重</option> 
   </select> 
  </p> 
 </p> 
 <p style="float:left;"> 
  <p style="margin:30px;margin-top:110px;">
   <input type="button" value="<<" onclick="Shift(&#39;left&#39;)"/>
  </p> 
  <p style="margin:30px;margin-top:30px;">
   <input type="button" value=">>" onclick="Shift('right')"/>
  </p> 
 </p> 
 <p style="margin-top:-20px;"> 
  <p style="margin-left:22%;"> 
   <b>需导出字段</b> 
  </p> 
  <p style="float:left;"> 
   <select name="right" multiple="multiple" onchange="selected(this)" style="height:350px;width:200px;"> 
    <option value="首价">首价</option> 
    <option value="续价">续价</option> 
    <option value="大大">大大</option> 
    <option value="小小">小小</option> 
   </select> 
  </p> 
 </p> 
 <p style="float:left;"> 
  <p style="margin:30px;margin-top:110px;">
   <input type="button" value="向上" onclick="ShiftValue(&#39;top&#39;)" />
   </p> 
  <p style="margin:30px;margin-top:30px;">
   <input type="button" value="向下" onclick="ShiftValue(&#39;bottom&#39;)" />
  </p> 
 </p>

I believe you have mastered the method after reading the case in this article. For more exciting things, please pay attention to php Other related articles on the Chinese website!

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