js try...finally All In One

js try...finally All In One

try...catch...finally

try {
  console.log('tryCode - Code block to run');
} catch(err) {
  console.log('catchCode - Code block to handle errors', err);
  // throw new Error(err);
} finally {
  console.log('finallyCode - Code block to be executed regardless of the try result');
}

1. try...catch
2. try...finally
3. try...catch...finally

https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/try...catch

demo

    try {
      this.parent = activeEffect
      activeEffect = this
      shouldTrack = true

      trackOpBit = 1 << ++effectTrackDepth

      if (effectTrackDepth <= maxMarkerBits) {
        initDepMarkers(this)
      } else {
        cleanupEffect(this)
      }
      return this.fn()
    } finally {
      if (effectTrackDepth <= maxMarkerBits) {
        finalizeDepMarkers(this)
      }

      trackOpBit = 1 << --effectTrackDepth

      activeEffect = this.parent
      shouldTrack = lastShouldTrack
      this.parent = undefined
    }

https://github.com/vuejs/core/blob/main/packages/reactivity/src/effect.ts

https://github.com/vuejs/core/blob/main/packages/reactivity/src/effect.ts#L107

https://github.com/vuejs/core/blob/main/packages/reactivity/src/effect.ts#L94-L114

refs

https://www.w3schools.com/jsref/jsref_try_catch.asp
https://www.runoob.com/jsref/jsref-try-catch.html

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