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I have a class MYMODULE.Image{}, but I want to instantiate an object of type HTMLImageElement. When I call new Image(), TypeScript thinks I want to instantiate MYMODULE.Image, even when I use

image: HTMLImageElement = new Image();

Can I somehow explicitly call the global Image class? I tried

image: HTMLImageElement = new Window.Image(); but to no avail.

A scope resolution operator like C++'s ::Image would be handy. Perhaps it's there and I just don't see it.

Thank you

I have a class MYMODULE.Image{}, but I want to instantiate an object of type HTMLImageElement. When I call new Image(), TypeScript thinks I want to instantiate MYMODULE.Image, even when I use

image: HTMLImageElement = new Image();

Can I somehow explicitly call the global Image class? I tried

image: HTMLImageElement = new Window.Image(); but to no avail.

A scope resolution operator like C++'s ::Image would be handy. Perhaps it's there and I just don't see it.

Thank you

• javascript
• typescript

Share Follow edited Aug 8, 2014 at 13:41 user37057 asked Aug 8, 2014 at 12:47 user37057user37057 6911 gold badge11 silver badge55 bronze badges

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2 Answers 2

Sorted by: Reset to default 7

Creating a HTMLImage element can be done like this.

document.createElement("img");

According to the Mozilla documentation it is the same: https://developer.mozilla/en-US/docs/Web/API/HTMLImageElement.Image

Edit:

If you want to use the Image constructor you might need to create a new interface like below:

interface Window {
    Image: {   
        prototype: HTMLImageElement;
        new (): HTMLImageElement;
    };
}
var a = new window.Image()

You can do that with a clever use of typeof :

declare var imageType:typeof Image; // Create a alias so you can refer to the type 
interface Window{
    // Use the `typeof alias` because `Image` would be confused in the context
    Image: typeof imageType; 
}

Complete sample:

declare var imageType:typeof Image;
interface Window{
    Image: typeof imageType;
}

module Foo{
    class Image{}

    var image: HTMLImageElement = new window.Image();
}

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