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once() — vue Function Reference

Architecture documentation for the once() function in util.ts from the vue codebase.

Function typescript WebPlatform DomUtilities called by 2

Entity Profile

Dependency Diagram

graph TD
  a8e0e452_e7c0_9fb5_f4fe_58e890a49204["once()"]
  ba54cdc9_f934_43fb_f1d2_3319595d4c1d["enter()"]
  ba54cdc9_f934_43fb_f1d2_3319595d4c1d -->|calls| a8e0e452_e7c0_9fb5_f4fe_58e890a49204
  bb5c970d_2e75_b59b_6ddf_fe4f60d2e887["leave()"]
  bb5c970d_2e75_b59b_6ddf_fe4f60d2e887 -->|calls| a8e0e452_e7c0_9fb5_f4fe_58e890a49204
  style a8e0e452_e7c0_9fb5_f4fe_58e890a49204 fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

src/shared/util.ts lines 361–369

export function once<T extends (...args: any[]) => any>(fn: T): T {
  let called = false
  return function () {
    if (!called) {
      called = true
      fn.apply(this, arguments as any)
    }
  } as any
}

Domain

Subdomains

Called By

Source

Frequently Asked Questions

What does once() do?
once() is a function in the vue codebase.
What calls once()?
once() is called by 2 function(s): enter, leave.

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