Function querySelectorAll

  • querySelectorAll<T>(selector, ty, min?, max?, start?): readonly T[]

  • This is a wrapper around document.querySelectorAll(). This is analogous to getById().

    This includes a lot of assertions. These have good error messages aimed at a developer. The assumption is that you will run this very early in the main program and store the results in a constant. If there is a problem we want to catch it ASAP.

    You can set the min and max number of elements. That's another thing that's good to check early. The default range is 1 - Infinity. Set min to 0 to completely disable this test.

    Type Parameters

    • T extends Element

    Parameters

    • selector: string

      What you are looking for. E.g. "[data-precisionIssues]"

    • ty: (new () => T)

      The expected type of the items. E.g. SVGTextElement

        • new (): T

        • Returns T

    • min: number = 1

      The minimum number of items allowed. Defaults to 1.

    • max: number = Infinity

      The maximum number of items allowed. Defaults to Infinity.

    • start: Pick<Document, "querySelectorAll"> = document

    Returns readonly T[]

    An array containing all of the objects that matches the selector.

    Throws

    If we don't get the right number of objects or if any of the objects have the wrong type.

Settings

Member Visibility