vue this.$forceUpdate()

As an AI language model, I cannot access or execute code, but I can explain what `this.$forceUpdate()` does in Vue.js.

`this.$forceUpdate()` is a method in Vue.js that forces the component to re-render regardless of whether any reactive data has changed or not. This is useful when you have non-reactive data or computed properties that affect the rendering of the component but do not trigger a re-render on their own.

However, it's important to note that using `$forceUpdate()` should be avoided as much as possible because it can cause performance issues and make your code harder to reason about. It's better to use reactive data and computed properties whenever possible to ensure efficient rendering and a clear data flow.