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HTMLInputElement: maxLength property - Web APIs | MDN
A number representing the element's maxlength
if present, or -1
.
Given the following HTML:
<p>
<label for="password">Your password</label>
<input id="password" type="password" minlength="8" maxlength="20" />
</p>
You can use the maxLength
property to retrieve or set the <input>
's maxlength
attribute value:
const inputElement = document.querySelector("#password");
console.log(`Element's maxLength: ${inputElement.maxLength}`); // "Element's maxlength: 20"
inputElement.maxLength = 18; // updates the element's maxlength attribute value