Method _assignValue

src/material/select/select.ts:1099–1110

Assigns a specific value to the select. Returns whether the value has changed.

(newValue: any | any[])

  /** Assigns a specific value to the select. Returns whether the value has changed. */
  private _assignValue(newValue: any | any[]): boolean {
    // Always re-assign an array, because it might have been mutated.
    if (newValue !== this._value || (this._multiple && Array.isArray(newValue))) {
      if (this.options) {
        this._setSelectionByValue(newValue);
      }

      this._value = newValue;
      return true;
    }
    return false;
  }

  // `skipPredicate` determines if key manager should avoid putting a given option in the tab
  // order. Allow disabled list items to receive focus via keyboard to align with WAI ARIA