ValidityState: rangeOverflow property
Baseline
Widely available
This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.
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.
Value
A boolean that is true if the ValidityState does not conform to the constraints.
Examples
Input with numeric overflow
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;
}
<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…");
}
});
Specifications
| Specification |
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| HTML # dom-validitystate-rangeoverflow |
Browser compatibility
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rangeOverflow
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