In my Typescript code, I am retrieving the value of a DOM element like this:
document.getElementById('MyElementId') as HTMLElement).value
I feel unsure about casting it to HTMLElement. Is there a better way to specify the type and retrieve this attribute?
If you are aware of the specific type of element you are receiving, consider using the predefined element types instead of casting to any. TypeScript offers built-in types for all the basic DOM element types such as div, anchor, span, and option.
For instance, if you are retrieving a textarea element, you can use:
(<HTMLTextAreaElement>document.getElementById('MyElementId')).value
When you use the getElementById function, it returns just a generic Element, since TypeScript cannot determine the exact type of element that will be returned (if any). However, because more specific element types like HTMLOptionElement, HTMLTextAreaElement, etc., are all derived from the Element type, you can narrow down your return type with a cast to achieve the desired type safety.
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