Recipe 9.6. Setting a Field's Maximum LengthProblemYou want to limit the length of the string input into a text field. SolutionSet the text field's maxChars property. DiscussionBy default, an input text field allows a user to type in as many characters as he desires. However, you may have good reason to want to set a maximum. For example, if an input field prompts a user for his two-character country code, you might want to prevent the user from entering more than two characters. Setting the maxChars property to a number limits the user input to that many characters: field.maxChars = 6; // maximum of 6 characters can be input Set maxChars to null to allow an entry of unlimited length, if you've previously assigned a non-null value to maxChars. See AlsoRecipe 9.5 |