hydrateTextarea() — react Function Reference

Source Code

packages/react-dom-bindings/src/client/ReactDOMTextarea.js lines 150–173

export function hydrateTextarea(
  element: Element,
  value: ?string,
  defaultValue: ?string,
): void {
  const node: HTMLTextAreaElement = (element: any);
  let initialValue = value;
  if (initialValue == null) {
    if (defaultValue == null) {
      defaultValue = '';
    }
    initialValue = defaultValue;
  }
  // Track the value that we last observed which is the hydrated value so
  // that any change event that fires will trigger onChange on the actual
  // current value.
  const stringValue = toString(getToStringValue(initialValue));
  const changed = trackHydrated((node: any), stringValue, false);
  if (changed) {
    // If the current value is different, that suggests that the user
    // changed it before hydration. Queue a replay of the change event.
    queueChangeEvent(node);
  }
}