清除jQuery Mobile中pageChange / pageRemove上的javascript间隔

Question

下面是jQueryMobile中一个简化的pageinit事件代码。我创建一个函数并在其上声明一个间隔但我无法清除pageremove事件的间隔。它在此事件上返回null，但间隔在其他页面上继续。

var interval_geoLocationParse;
$(document).delegate("#agriMapperGeoLocationAdd", "pageremove", function(){
   console.log(interval_geoLocationParse); // gives null interval is not cleared
   clearInterval(interval_geoLocationParse);
   });

$(document).delegate("#agriMapperGeoLocationAdd", "pageinit", function() { 
   function geoLocationParse(){
      //some function
      }
   interval_geoLocationParse = setInterval(geoLocationParse, 20000);
   console.log(interval_geoLocationParse); // gives interval ID
   });