How to observe the change of slot by vue

This article mainly introduces vue how to observe the changes of slot, the article is very detailed, has a certain reference value, interested friends must read it!

How to observe the change of slot

Sometimes we need to know when the content in the slot has changed:

Unfortunately, Vue doesn't have a built-in way to detect this, and it's a very simple way to use the mutation viewer:

Export default {mounted () {/ / call `update` const observer = new MutationObserver (this.update) when things change; / / observe the changes in this component observer.observe (this.$el, {childList: true, subtree: true});}}; this is all the content of the article "how vue watches slot changes". Thank you for reading! Hope to share the content to help you, more related knowledge, welcome to follow the industry information channel!