Function querySelector

querySelector<T>(selector, ty, start?): T
This is a wrapper around document.querySelector().

This looks for elements matching the query string. This ensures that exactly one element matches the query string, and that element has the expected type.
Type Parameters
- T extends Element
Parameters
- selector: string
  What to search for. E.g. "#main p:first-child"
- ty: (new () => T)
  The expected type. E.g. HTMLParagraphElement
  - - new (): T
    - Returns T
- start: Pick<Document, "querySelectorAll"> = document
  Where to look for the element. Defaults to window.document.
Returns T
The new element.

Throws
If we don't find the object, we find multiple matching objects or we find an object of the wrong type.
- Defined in client-misc.ts:144