javascript - How do I get a local file with the HTML5 File API's getfile()? -

i'm working on cordova app windows 8 , trying use html5 file api file , copy destination.

i have local file in www folder in folder called db. javascript file located in www/js folder.

i'm using code create instance of requestfilesystem():

window.requestfilesystem(window.temporary, 2 * 1024 * 1024, initfs, errorhandler);  function initfs(fs) {     console.log('woot!'); } function errorhandler(err) {     console.log(err.code); } 

inside initfs function need file, test if exists @ destination, if doesn't copy file. want create copyfile function , pass "from" directory, file, , destination

window.requestfilesystem(window.temporary, 2 * 1024 * 1024, initfs, errorhandler);      function initfs(fs) {         var fromlocation = [local db directory];         var myfile = [file stored in local db directory];         var tolocation = [destination copy to];         copyfile(fromlocation, myfile, tolocation);     }      function errorhandler(err) {         console.log(err.code);     }      function copyfile(fromloc, src, toloc){         //copy file new location     } 

all examples i've read talk how create , manipulate file none talk manipulating file exists.

the way i'm fixing running sqlite statement using cordova sqlite storage plugin checks if table exists. if doesn't table created , set of inserts run. if table exist nothing happens.

the open db statement create db if 1 doesn't exist. if db exists isn't overwritten.