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Using the Xcode simulator to test a website we are developing, we ran into the following issue:HTML<input type="hidden" id="saveId" name="saveId" val="<?=$saveId?>" />($saveId is passed by the PHP and can be a value or empty)1 var saveId = $('#saveId').val();2 if (saveId) {3 window.location = relativePath + 'autoSave/continueListing?saveId=' + saveId;4 }PROBLEMOn the Xcode simulator (running iOS 9.1), if $saveId="", the window gets refreshed with a new URL ofautoSave/continueListing?saveId=nullOn other javascript implementations (eg Chrome, Firefox and Edge), the test at line 2 is ignored in this instance.Using the debugger, we can see that the value at line 2 in the Xcode simulator is """" so an empty string, rather than null.Any ideas why this is happening?Marco