js implementation example of clicking the left and right buttons to rotate pictures_javascript skills

$(function () { 
  var index = 1; 
  var pPage = 1; 
  var $v_citemss = $(".citemss"); 
  var $v_show = $v_citemss.find("ul"); 
  v_width = $v_citemss.width();//图片展示区外围div的大小 
 
  //注：若为整数，前边不能再加var，否则会被提示underfine 
  p_count = $v_citemss.find("li").length;//获取此处li的个数 
  $(".slideprev1").click(function () { 
    if (!$v_show.is(":animated")) { 
      if (pPage == index) { 
        $v_show.animate({ right: '0px' }, "3000"); 
        pPage = 4; 
      } else { 
        $v_show.animate({right: '-=' + v_width },"3000"); 
        pPage--; 
      } 
    } 
  }); 
 
  $(".slidenext").click(function () { 
    if (!$v_show.is(":animated")) { 
      if (pPage == p_count) { 
        $v_show.animate({ left: '0px' }, "3000"); 
        pPage = 1; 
      } else { 
        $v_show.animate({ left: '-=' + v_width }, "3000"); 
        pPage++; 
      } 
    } 
  }); 
});