用于文本框验证的HTML5正则表达式模式：仅允许字母，空格和连字符

Question

I am creating a form in html and for my first and last name text inputs, I want to have a regex validation on them that only allows the user to input: letters of the alphabet, spaces, and hyphens.

I have tried this pattern but to no avail:

[A-Za-z -]

My HTML code:

<input type="text" id="first_name" name="first_name" maxlength="25" required="required" pattern="[A-Za-z -]"/>

I know how to get only alphabet characters, but allowing spaces and hyphens only is something I'm unable to manage.

Answer 1

添加锚点和量词：

^[A-Za-z -]+$