1---
2category: Component
3---
4 
5# tryOnBeforeMount
6 
7Safe `onBeforeMount`. Call `onBeforeMount()` if it's inside a component lifecycle, if not, just call the function
8 
9## Usage
10 
11```ts
12import { tryOnBeforeMount } from '@vueuse/core'
13 
14tryOnBeforeMount(() => {
15 
16})
17```
18 
19## Type Declarations
20 
21```ts
22/**
23 * Call onBeforeMount() if it's inside a component lifecycle, if not, just call the function
24 *
25 * @param fn
26 * @param sync if set to false, it will run in the nextTick() of Vue
27 * @param target
28 */
29export declare function tryOnBeforeMount(
30  fn: Fn,
31  sync?: boolean,
32  target?: ComponentInternalInstance | null,
33): void
34```
35