Name validation check with alpha numeric using jQuery.

<div class="row">

        <div class="col-md-6 offset-md-3">

          <input type="text" class="form-control" 

placeholder="Full Name" name="customer_name" 

id="customer_name" autocomplete="off" required>

        </div>

      </div>

<script>

$('#customer_name').keypress(function(e) {

        var keyCode = e.keyCode || e.which;

        //Regex for Valid Characters i.e. 

Alphabets and Numbers.

        var regex = /^[A-Za-z0-9]+$/;

        //Validate TextBox value against the Regex.

var isValid = regex.test(String.fromCharCode(keyCode));

        if (!isValid) {

          return false;

        }

        return isValid;

      });

</script>