How to validate email after text is entered in textfield Appcelerator

Question

I am new in appcelerator. I have a doubt. Does anybody have any idea about how to check email validation after we entered text in text field. I can able to do by a button click. But what i want is that, need to check in text field itself after text is entered. Any help will be deeply appreciated.

Thanks

Answer 1

You can add a event listener on textfield.

textField.addEventListener('return',function(e){
     if(isValidEmail(e.source.value)){
        //Email is valid
     }else{
        //Invalid Email
     }

});


function isValidEmail(email) { 
    var re = /^(([^<>()[\]\\.,;:\s@\"]+(\.[^<>()[\]\\.,;:\s@\"]+)*)|(\".+\"))@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\])|(([a-zA-Z\-0-9]+\.)+[a-zA-Z]{2,}))$/;
    return re.test(email);
}