tryOnMounted 
安全的 onMounted。如果在组件生命周期内,调用 onMounted(),如果不是,直接调用函数。
用法 
js
import { tryOnMounted } from '@vueuse/core'
tryOnMounted(() => {
})Type Declarations 
typescript
/**
 * Call onMounted() if it's inside a component lifecycle, if not, just call the function
 *
 * @param fn
 * @param sync if set to false, it will run in the nextTick() of Vue
 * @param target
 */
export declare function tryOnMounted(fn: Fn, sync?: boolean, target?: any): void