//提取邮箱 function pickmail(obj,callback){ var jval = $(obj); //<td> var jurl = jval.parent().attr(‘url’); //<tr> jval.show(); jval.html(’<div class=“pmmsg”></div><strong>邮箱:</strong>’); for(var i=0;i<jsondata.data.length;i++){ if (jsondata.data[i].url==jurl){ downurl(1,[jurl],jval.parent(),jsondata.data[i]); break; } } }

$("#dopickmail").on('click',function(){
  //显示邮内容:
  var jitems =[];
  $(HTML_ID_SEARCHDATA).find('td[colspan="2"]').each(function(index, val) {
    jitems.append(val);
  });

  var q = async.queue(function(obj,pick,callback){
    pick(obj,callback);
  },3);

  /**
  * 监听：如果某次push操作后，任务数将达到或超过worker数量时，将调用该函数
  */
  q.saturated = function() {
    $(HTML_ID_MSGTXT).text('all workers to be used'+q.length());
  }

  /**
  * 监听：当最后一个任务交给worker时，将调用该函数
  */
  q.empty = function() {
    $(HTML_ID_MSGTXT).text('no more tasks wating');
  }

  /**
  * 监听：当所有任务都执行完以后，将调用该函数
  */
  q.drain = function() {
    $(HTML_ID_MSGTXT).text('all tasks have been processed');
  }

  $.each(jitems,function(index,value){
    q.push(value,pickmail,function(err){}); 
  });

});
//end 提取