什么是允许在输入字段中输入数字字符和点的html模式

Question

I have input field type is text.

What is the pattern to allow Numbers, characters and Dot(special character) to input field?

Answer 1

 input[type="text"]:valid{ color:green; } input[type="text"]:invalid{ color:red; } 

 <input type="text" pattern="^[a-zA-Z0-9\\.]*$" value="test1234.">