javascript - FileReader() is not defined in Angularjs Directive -


i working on file upload functionality on ui. basically, on ui page, need read file contents , display when user selects local file his/her machine. this, googled , found http://plnkr.co/edit/eeqbr65oe8iljm7ueghx?p=preview example. working fine. used in application, not working , giving me error that"filereader" not defined.

here example:

function onreadfile($parse) {     return {         restrict: 'a',         scope: false,         link: function(scope, element, attrs) {             var fn = $parse(attrs.onreadfile);              element.on('change', function(onchangeevent) {                 var reader = new filereader();                  reader.onload = function(onloadevent) {                     scope.$apply(function() {                         fn(scope, {$filecontent:onloadevent.target.result});                     });                 };                  reader.readastext((onchangeevent.srcelement || onchangeevent.target).files[0]);             });         }     }; }


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