javascript - AJAX not firing before Callback -


i'm attempting run ajax query , insert results local database before moving onto new window.location. however, success function insert results not run. instead callback function causes new page load. if comment out if (callback {callback();} ajax completes inserts, window.location code not called. callback function seems called before ajax success function completed. how ajax success insert results before moving on? here's code i'm using:

<script>         var db = window.opendatabase("mantismobiledb1", "", "mantismobiledb", 1024 * 1000); function createdb() {     db.transaction(function (tx) {         tx.executesql('create table if not exists routes(id integer primary key, routeid text, customerid text, stopseq text, driverid text)', []);     }); } function insertroute(routeid, customerid, stopseq, driverid) {     db.transaction(function (tx) {         tx.executesql('insert routes (routeid, customerid, stopseq, driverid) values (?, ?, ?, ?)', [routeid, customerid, stopseq, driverid], countreturns);     }); }          function loadinitialroutelist(callback) {             var dataobject = {                 postdesignator: 'routes'             };             $.ajax({                 url: 'http://url.php',                 data: dataobject,                 datatype: 'json',                 type: 'post',                 success: function (result) {                     (var = 0, len = result.records.length; < len; ++i) {                         var route = result.records[i].record;                         insertroute(route.routeid, null, null, null);                     }                     if (callback) { callback(); }                 }             });          }      if (localstorage.getitem('exitsatus') === null) {         createdb();         loadinitialroutelist(function () { window.location = 'application.html'; });      }     else {         window.location = localstorage.getitem('exitsatus');     } </script>


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