Vue components automatically re-render when a component state or props is changed. like a simple state change may re-render the component with a new UI (User interface). In some cases, the vue reactivity system doesn’t enough to detect the dom changes, so that we need to force update the vue components to re-render. Vue offers us a built-in method called forceUpdate(), by using this method inside vue instance we can force update the component. Let’s see an example:. In the above example, we have attached an update method to the button element. Inside the update method we have added a this.$forceUpdate() method, so that when we click on a button, it will re-render the component with a new random number.
Here is an example:. Vue.js is an easy to use web app framework that we can use to develop interactive front end apps.
In this article, we’ll look ar the ways to rerender a Vue component, and which way is the right way.
The whole point of having a single page app is to not have to reload the whole page to update data.
- Therefore, it’s bad to have the whole page reload to rerender the component.
- For instance, we shouldn’t write anything like the following code:.
We have location.reload() which we shouldn’t call in a single-page app.
The v-if directive only renders the page only when the condition is true . If it’s false , it won’t be in the DOM. The v-if hack works by setting the v-if condition to false , and then setting it back to true on the next DOM update cycle by calling $nextTick .