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Showing content from https://developer.mozilla.org/en-US/docs/Web/API/ValidityState/rangeOverflow below:

ValidityState: rangeOverflow property - Web APIs

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The read-only rangeOverflow property of the ValidityState interface indicates if the value of an <input>, after having been edited by the user, does not conform to the constraints set by the element's max attribute.

If the field is numeric in nature, including the date, month, week, time, datetime-local, number and range types and a max value is set, if the value doesn't conform to the constraints set by the max value, the rangeOverflow property will be true.

A boolean that is true if the ValidityState does not conform to the constraints.

The following example checks the validity of a numeric input element. A constraint has been added using the max attribute which sets a maximum value of 18 for the input. If the user enters a number higher than 18, the element fails constraint validation, and the styles matching :invalid and :out-of-range CSS pseudo-classes

/* or :invalid */
input:out-of-range {
  outline: red solid 3px;
}

body {
  margin: 0.5rem;
}
pre {
  padding: 1rem;
  height: 2rem;
  background-color: lightgrey;
  outline: 1px solid grey;
}

<pre id="log">Validation logged here...</pre>
<input type="number" id="age" max="18" />

const userInput = document.getElementById("age");
const logElement = document.getElementById("log");

function log(text) {
  logElement.innerText = text;
}

userInput.addEventListener("input", () => {
  userInput.reportValidity();
  if (userInput.validity.rangeOverflow) {
    log("Number is too high!");
  } else {
    log("Input is valid…");
  }
});

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