What is the life cycle function in vue

The life cycle function in Vue is a series of callback functions called at different stages of component creation, update and destruction, used to customize component behavior and respond to events. Life cycle functions include: creation phase: beforeCreate, created, beforeMount, mounted update phase: beforeUpdate, updated destruction phase: beforeDestroy, destroyed

Vue Medium The life cycle function

In Vue.js, the life cycle function is a series of predefined callback functions that can be called at different stages of component creation, update, and destruction. These functions allow us to customize the component's behavior and respond to various events.

List of life cycle functions in Vue:

Creation phase:

• beforeCreate: Called before instance initialization.
• created: Called after the instance is initialized.
• beforeMount: Called before mounting to DOM.
• mounted: Called after mounting to the DOM.

Update phase:

• beforeUpdate: Called before the virtual DOM is updated.
• updated: Called after the virtual DOM is updated.

Destruction phase:

• beforeDestroy: Called before the instance is destroyed.
• destroyed: Called after the instance is destroyed.

Usage:

Lifecycle functions can be used in components in the following ways:

export default {
  data() {
    return {
      // ...
    };
  },
  methods: {
    // ...
  },
  created() {
    // ...
  },
  mounted() {
    // ...
  },
  beforeDestroy() {
    // ...
  },
};

Importance:

Lifecycle functions are critical for managing component state, handling asynchronous operations, and adding custom behaviors to components. By leveraging lifecycle functions, we can create more responsive and controllable Vue components.

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