GlobalEventHandlers.onreset
  The onreset property of the
  GlobalEventHandlers mixin is an event handler that
  processes reset events.
  The reset event fires when the user clicks a reset button in a form
  (<input type="reset">).
Syntax
target.onreset = functionRef;
Value
  functionRef is a function name or a function
expression. The function receives an Event object as its sole
  argument.
Example
  This example logs the current Event.timeStamp whenever you reset the
  form.
HTML
<form id="form">
  <label>Test field: <input type="text"></label>
  <br><br>
  <button type="reset">Reset form</button>
</form>
<p id="log"></p>
JavaScript
function logReset(event) {
  log.textContent = `Form reset! Time stamp: ${event.timeStamp}`;
}
const form = document.getElementById('form');
const log = document.getElementById('log');
form.onreset = logReset;
Result
Specifications
| Specification | 
|---|
| HTML Standard # handler-onreset | 
Browser compatibility
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