HTMLTextAreaElement: minLength 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 minLength
property of the HTMLTextAreaElement
interface indicates the minimum number of characters (in UTF-16 code units) required for the value of the <textarea>
element to be valid. It reflects the element's minlength
attribute. -1
means there is no minimum length requirement.
Note:
If the textarea has a value, and that value has fewer characters than the minlength
attribute requires, the element is considered invalid and the ValidityState
object's tooShort
property will be true
.
Value
A number representing the element's minlength
if present or -1
.
Example
Given the following HTML:
<p>
<label for="comment">Comment</label>
<textarea id="comment" minlength="10" maxlength="200" /></textarea>
</p>
You can use the minLength
property to retrieve or set the <textarea>
's minlength
attribute value:
const textareaElement = document.querySelector("#comment");
console.log(`Element's minLength: ${textareaElement.minLength}`); // "Element's minlength: 10"
textareaElement.minLength = 5; // updates the element's minlength attribute value
Specifications
Specification |
---|
HTML Standard # dom-textarea-minlength |
Browser compatibility
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