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Jquery mobile multiple select with many options

When multiple select has too many options, jquery mobile will open a dialog rather than popup, which is a new page. Every time the popup is closed the pagecontainerbeforeload and pagecontainershow events are triggered again and thereby the initialisation code. We could add a check on the prevPage to avoid unwanted initialisation.

    $(document).on( "pagecontainerbeforeload", function( event, data ) {
         if(ui.prevPage.attr("id").indexOf("-dialog")>-1){
              return;
         }
         ......initialisation code....
    }
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