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updateValueIfChanged() — react Function Reference

Architecture documentation for the updateValueIfChanged() function in inputValueTracking.js from the react codebase.

Function javascript BabelCompiler Validation called by 2

Entity Profile

Dependency Diagram

graph TD
  c66d3317_2d86_a8d4_7629_44de9f6a564d["updateValueIfChanged()"]
  87cb1bb7_ad8f_2954_9806_14348a9bbec3["inputValueTracking.js"]
  c66d3317_2d86_a8d4_7629_44de9f6a564d -->|defined in| 87cb1bb7_ad8f_2954_9806_14348a9bbec3
  eb91f874_8ee4_2703_d333_d67f28ac1a0b["restoreControlledInputState()"]
  eb91f874_8ee4_2703_d333_d67f28ac1a0b -->|calls| c66d3317_2d86_a8d4_7629_44de9f6a564d
  01a8dfab_7064_d128_d114_f628d32337b1["getInstIfValueChanged()"]
  01a8dfab_7064_d128_d114_f628d32337b1 -->|calls| c66d3317_2d86_a8d4_7629_44de9f6a564d
  style c66d3317_2d86_a8d4_7629_44de9f6a564d fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

packages/react-dom-bindings/src/client/inputValueTracking.js lines 162–181

export function updateValueIfChanged(node: ElementWithValueTracker): boolean {
  if (!node) {
    return false;
  }

  const tracker = getTracker(node);
  // if there is no tracker at this point it's unlikely
  // that trying again will succeed
  if (!tracker) {
    return true;
  }

  const lastValue = tracker.getValue();
  const nextValue = getValueFromNode(node);
  if (nextValue !== lastValue) {
    tracker.setValue(nextValue);
    return true;
  }
  return false;
}

Domain

Subdomains

Defined In

Called By

Source

Frequently Asked Questions

What does updateValueIfChanged() do?
updateValueIfChanged() is a function in the react codebase, defined in packages/react-dom-bindings/src/client/inputValueTracking.js.
Where is updateValueIfChanged() defined?
updateValueIfChanged() is defined in packages/react-dom-bindings/src/client/inputValueTracking.js at line 162.
What calls updateValueIfChanged()?
updateValueIfChanged() is called by 2 function(s): getInstIfValueChanged, restoreControlledInputState.

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