window.URL.createObjectURL(blob); is undefined in my application

问题:

I'm facing this issue only in my application irrespective of browser (IE & Chrome). If I check window.URL.createObjectURL(blob) in console of any other page in both the browsers, its working fine. But it window.URL.createObjectURL(blob) is getting undefined only in the tab in which I open my application :(

I'm not sure, which library is removing "createObjectURL" method.

following are my scripts

<script src="src/js/libs/jquery/dist/jquery.js"></script> <script src="src/js/libs/toastr/toastr.js"></script> <script src="src/js/libs/moment/moment.js"></script> <script src="src/js/libs/bootstrap/dist/js/bootstrap.js"></script> <script src="src/js/libs/angular/angular.js"></script> <script src="src/js/libs/angular-route/angular-route.js"></script> <script src="src/js/libs/angular-sanitize/angular-sanitize.js></script> <script src="src/js/libs/angular-animate/angular-animate.js"></script> <script src="src/js/libs/angular-mocks/angular-mocks.js"></script> <script src="src/js/libs/angular-bootstrap/ui-bootstrap-tpls.js"></script> 

I'm not able to figure out how to get window.URL.createObjectURL

Here is the error in IE console

Error: [IGL] Object doesn't support property or method 'createObjectURL' TypeError: Object doesn't support property or method 'createObjectURL'

Here is the error in Chrome

Error: [IGL] window.URL.createObjectURL is not a function TypeError: window.URL.createObjectURL is not a function

Thanks in advance

回答1:

I figure out the solution for this by using following script from Arun & @Phil comments. Thanks to both of them.

Its not with any library, in my application somewhere in unused code, there a global URL object which is overriding the window.URL.

I found this by using the following code:

(function () {         var _createObjectURL = window.URL.createObjectURL;                 Object.defineProperty(window.URL, 'createObjectURL', {                 set: function (value) {                 console.trace('set createObjectURL')                         _createObjectURL = value;                 },                         get: function () {                         console.trace('get createObjectURL')                                 return _createObjectURL;                         }                 })                 })();                 (function () {                 var _URL = window.URL;                         Object.defineProperty(window, 'URL', {                         set: function (value) {                         console.trace('set URL')                                 _URL = value;                         },                                 get: function () {                                 console.trace('get URL')                                         return _URL;                                 }                         })                         })();   

文章来源: window.URL.createObjectURL(blob); is undefined in my application