javascript - $window in angular.js throws exception when using $window.open -

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i error thrown:

error: error: [$parse:isecwindow] referencing window in angular expressions disallowed!

when try using $window.open/window.open in angularjs.

generate.html

<div class="print-report-footer" ng-show="vm.clicked">     <button type="button" class="btn btn-primary" ng-click="vm.downloadfile('pdf')">pdf</button>     <button type="button" class="btn btn-primary" ng-click="vm.downloadfile('xls')">xls</button>     <button type="button" class="btn btn-primary" ng-click="vm.downloadfile('csv')">csv</button> </div>

generate.ctrl.js

    function downloadfile ( filetype ) {         var path = '/images/reports/districtschoolreport.' + filetype;         return $window.open( path );     }      self.downloadfile   = downloadfile;

this code have used. need avoid error thrown everytime use $window.open?

you running $window.open() view. instead: (don't use return)

function downloadfile ( filetype ) {     var path = '/images/reports/districtschoolreport.' + filetype;     $window.open( path ); }

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