How to use pattern in html for not allow any numbers and special characters other than space?

Answer 1

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Answer 2

by using,
<input type="text" pattern="[A-Za-z ]+"/>
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Answer 3

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Answer 4

for example:
we want a user name with only alphabets and space and also its not containing any special character or numbers means we only mention in that alphabets in pattern input type
by denoting <pattern="[A-Za-z]+".
In above example only takes alphabets from upper case A-Z and lowercase a-z.
+ denotes the letter taken from A-Z if its not mention it will only display A or a