How do you define input length?

When using byte length semantics (the default), the input length represents the number of bytes in the current character set. In other words, it is the number of bytes used by the character string in the character set used by the runtime system.

1. How to set input value length in HTML?
2. How do I limit the number of characters in an input field?
3. How do I restrict text input in HTML?

How to set input value length in HTML?

Input value length

You can specify a minimum length (in characters) for the entered value using the minlength attribute; similarly, use maxlength to set the maximum length of the entered value, in characters. The example below requires that the entered value be 4–8 characters in length.

How do I limit the number of characters in an input field?

To set the maximum character limit in input field, we use <input> maxlength attribute. This attribute is used to specify the maximum number of characters enters the <input> field. To set the minimum character limit in input field, we use <input> minlength attribute.

How do I restrict text input in HTML?

-]+\. [a-z]2,3$"> will restrict the allowed characters according that RegExp pattern (in this case: valid-looking email addresses). The title attribute will be used as a warning / notification when the user tries to submit the data not matching the requirement.