allow only letters javascript
document.getElementById('inputid').onkeypress=function(e){ if(!(/[a-z ]/i.test(String.fromCharCode(e.keyCode)))) { e.preventDefault(); return false; } }
Source: stackoverflow.com
document.getElementById('inputid').onkeypress=function(e){ if(!(/[a-z ]/i.test(String.fromCharCode(e.keyCode)))) { e.preventDefault(); return false; } }