allowing only alphabets in text box using java script

Question

I want to allow only alphabets in textbox using JavaScript I used the code:

var nam=f.nm.value;
if(!isNaN(nam))  
    region.innerHTML=\"alphabets only\";
<         


        

Answer 1

You can use HTML5 pattern attribute to do this:

If the user enters an input that conflicts with the pattern, it will show an error dialogue automatically.