Question

I made a regular expression that only accepts letters. I’m not really good in regex, thats why I don’t know how to include spaces in my regex.

My HTML:

<input id="input" />

My js / jQuery code:

$('#input').on('keyup', function() {
      var RegExpression = /^[a-zA-Z]*$/; 

      if (RegExpression.test($('#input').val())) {

      } 
      else {
          $('#input').val("");
      }
});​

Answer 1

use this expression

var RegExpression = /^[a-zA-Z\s]*$/;  

Update: 27-April-2023

function validate(){
  const regEx1 = /[^a-zA-Z\s]+/;
    input.value = input.value.replace(regEx1, '');
}

<input id="input" type="text" onkeyup="return validate();">