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The Low Down
maxlength attribute limits the number of characters that an
<textarea> can accept. The
maxlength attribute on textarea is new in HTML5.
- Works for GUI-less inputs like text, email, url, search, tel and password.
- Upon data entry, browsers will not permit the user to enter more than the characters defined by the value of the
maxlengthattribute: cutting off the text as-you-type and truncating pasted text. This can lead to bad user experience.
maxlengthdoes not limit
- If a preset value is included with a value that has more characters than the allowed length, a validation error will not be thrown. However, if that preset value is edited, yet is still longer than the allowed length, the element will become invalid, matching the
:invalidpseudoclass selector, and will be prevented from being submitted in both Opera and IE10+, which both display the tooLong validity error message.
- IE 9 reported support on both inputs and textareas but only works on inputs.