The effect of moving the focus image left and right implemented by jQuery_jquery

The example in this article describes the effect of moving the focus image left and right implemented by jQuery. Share it with everyone for your reference, the details are as follows:

jquery part:

$(function () {
  var _speed = 1000;
  var _len = 0;
  var _size = 150;
  var _direction = 'left';
  function mar(){
    if(_direction == 'left'){
      if(_len >= 450){
       _direction = 'right';
      }else{
       $(".flow ul").animate({"margin-left":"-=" + _size + "px"});
       _len += _size;
      }
    }else{
      if(_len <= 0){
       _direction = 'left';
      }else{
       $(".flow ul").animate({"margin-left":"+=" + _size + "px"});
       _len -= _size;
      }
    }
  }
  var _go = setInterval(mar,_speed);
  $("#pic_left").click(function (){
   _direction = 'left';
  });
  $("#pic_right").click(function (){
   _direction = 'right';
  });
  $(".flow li").mouseover(function (){
    clearInterval(_go);
  }).mouseout(function (){
    _go = setInterval(mar,_speed);
  });
});

html part

<div class="salebox">
  <A class="left" id="pic_left">left</A>
  <DIV class="pcont" id="ISL_Cont_1">
    <DIV class="ScrCont">
      <div class="flowbox" style="width:150px; height:60px; overflow:hidden;float:left;">
        <div class="flow" style="width:150px;height:60px;">
          <ul >
           <li><img src="__PUBLIC__/images/demo/01.jpg" mce_src="__PUBLIC__/images/demo/01.jpg" width="150px" height="60px"></li>
           <li><img src="__PUBLIC__/images/demo/02.jpg" mce_src="__PUBLIC__/images/demo/02.jpg" width="150px" height="60px"></li>
           <li><img src="__PUBLIC__/images/demo/03.jpg" mce_src="__PUBLIC__/images/demo/03.jpg" width="150px" height="60px"></li>
           <li><img src="__PUBLIC__/images/demo/04.jpg" mce_src="__PUBLIC__/images/demo/04.jpg" width="150px" height="60px"></li>
          </ul>
        </div>
      </div>
    </DIV>
   </DIV>
  <A class="right" id="pic_right">right</A>
</div>

Readers who are interested in more content related to jQuery special effects can check out the special topics on this site: "Summary of jQuery animation and special effects usage" and "Summary of common classic special effects of jQuery"

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