如何只调用一次ajax

当您想对该事件做某事时。

确定何时已加载数据。

var loaded = false;function showNews() {    //other js which show block    jQuery("#loader").show();    if(loaded) return;    //ajax which load content to block    jQuery.ajax({        type: "GET",        url: link,        dataType: "html",        success: function(data) { jQuery('#top-info-news').html(data);},        complete: function(){ jQuery('#loader').hide();        },    });    loaded = true;}

或

one.

<a href="javascript:;" title="Новости" onclick="showNews()" ></a>jQuery('.showNews').one('click', function() {    // your pre});

"Attach a handler to an event for the elements. The handler is executed atmost once per element."

参考