maxlength Attribute

Where to use the maxlength Attribute

• As Type Number:
  maxlength is declared on the elements: input type="text", input type="password"

Description

The maxlength attribute specifies the maximum number of characters which may be accepted by input type="text" or input type="password" form controls. The user is prevented from entering more than this number of characters into the text field. In the absence of this attribute, there is no limit to the number of characters entered.

Note: It should not be assumed in the server processing script that you will never receive a value longer than this for the field in question - it is always possible, for example, to receive data from another form which does not have this restriction or for someone to alter the query string directly in the URI.

See also the size attribute.