Method getId

src/cdk/a11y/id-generator.ts:31–48

* Generates a unique ID with a specific prefix. * @param prefix Prefix to add to the ID. * @param randomize Add a randomized infix string.

(prefix: string, randomize: boolean = false)

   * @param randomize Add a randomized infix string.
   */
  getId(prefix: string, randomize: boolean = false): string {
    // Omit the app ID if it's the default `ng`. Since the vast majority of pages have one
    // Angular app on them, we can reduce the amount of breakages by not adding it.
    if (this._appId !== 'ng') {
      prefix += this._appId;
    }

    let count = counters.get(prefix);

    if (count === undefined) {
      count = 0;
    } else {
      count++;
    }

    counters.set(prefix, count);
    return `${prefix}${randomize ? _IdGenerator._infix + '-' : ''}${count}`;
  }
}