Javascript 打字稿错误 TS2339：“窗口”类型上不存在属性“webkitURL”
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Typescript error TS2339: Property 'webkitURL' does not exist on type 'Window'
提问by Dan Reil
Using Angular 2 on a project which is compiled with typescript.
在用打字稿编译的项目上使用 Angular 2。
Getting this error when trying to create a blob image:
尝试创建 blob 图像时出现此错误：
error TS2339: Property 'webkitURL' does not exist on type 'Window'
error TS2339: Property 'webkitURL' does not exist on type 'Window'
ts code is:
ts代码是：
public url = window.URL || window.webkitURL;
this.photo = this.url.createObjectURL( res );
public url = window.URL || window.webkitURL;
this.photo = this.url.createObjectURL( res );
回答by basarat
error TS2339: Property 'webkitURL' does not exist on type 'Window'
错误 TS2339：“窗口”类型上不存在属性“webkitURL”
The lib.d.ts does not ship with stuff that is browser specific. However you can easily do (window as any).webkitURL. This is called a type assertion.
lib.d.ts 不附带特定于浏览器的内容。但是，您可以轻松做到(window as any).webkitURL。这称为类型断言。
More
更多的
The common (as any)style type assertion is a quickfix provided by alm : https://basarat.gitbooks.io/alm/content/features/quickfix.html
通用(as any)样式类型断言是 alm 提供的 quickfix：https://basarat.gitbooks.io/alm/content/features/quickfix.html
回答by Dan Reil
The solution that works as of TypeScript 2.1.5:
适用于 TypeScript 2.1.5 的解决方案：
interface Window {
webkitURL?: any;
}
declare var window: Window;
if (window.webkitURL !== undefined) {
console.log(window.webkitURL);
}
In the above code we declared an interface/shape for Window which will optionally have webkitURL defined and then we do a check to make sure it is defined.
在上面的代码中，我们为 Window 声明了一个接口/形状，它可以选择定义 webkitURL，然后我们进行检查以确保它已定义。
回答by Artem Bogdan
This approach worked for me. My curren version of typescript is 2.0.3
这种方法对我有用。我当前的打字稿版本是 2.0.3
add this out of the class
将这个添加到课堂之外
interface Window { logged_user: Object }
and when you need use this property, just use it
当您需要使用此属性时，只需使用它
window.logged_user = {};//your data
回答by Imamudin Naseem
Solution 1:
解决方案1：
interface Window {
webkitURL: any;
}
declare var window: Window;
//Now typescript will not throw any error on window.webkitURL
Solution 2:
(<any>window).webkitURLdoes not throw ts error
解决方案2：
(<any>window).webkitURL不抛出ts错误
