How to check if email exists with jQuery?Working only when typing email,but not when copy-paste?

Question

I'm trying to check if email exists with jQuery, but works only when typing, when I try with copy paste than shows that email is available, but its not. Please see below code.

JavaScript:

$(document).ready(function(){
    $('#test').keyup('check.php').show();
    $('#sign_up_email_input_first').keyup(function(){
        $.post('check.php', {email_sign_up: form.email_sign_up.value}, function(result){
            $('#test').html(result).show();}
        ); 
    });
});

PHP:

if(isset($_POST['email_sign_up']))
{
    $email = $_POST['email_sign_up'];
    $select = mysql_query("SELECT email FROM users WHERE email = '$email'") or die(mysql_error());
    $count = mysql_num_rows($select);
    if($email == NULL){
        echo "Choose Username";
    }else if(strlen($email)<=3){
        echo "";
    }else{
        if($count == 0){
            echo "Username is Available";
        }else if($count ==1){
            echo "Username is not Available";
        }
    }
}

make sure you trim any whitespace. Other than that you need to do some basic debugging. We can't do that for you — charlietfl, Jun 21 '16 at 01:17
you only have `keyup event` for checking email.. you cannot handle paste event with that — JF-Mechs, Jun 21 '16 at 01:21

score 0 · Answer 1 · answered Jun 21 '16 at 01:21

0

The reason it only works when typing is you're using the keyup event to capture input.

answered Jun 21 '16 at 01:21

pabrams

1,157
10
34

1

Depends what you want to achieve exactly. Maybe blur? – pabrams Jun 21 '16 at 01:24
1

why not register onblur as well? This way, the email will be validated once the user finishes copy and pasting and clicks elsewhere – derp Jun 21 '16 at 01:25
I have changed 'onblur', but is not showing anything! – K.Wayne Jun 21 '16 at 01:28
@K.Wayne See [catch paste input](http://stackoverflow.com/questions/686995/catch-paste-input) – Ultimater Jun 21 '16 at 01:32
@K.Wayne Also, your question could use some more work - I'm too lazy to do it for you. You should probably read the help center article "How to create a minimal, complete and verifiable example". – pabrams Jun 21 '16 at 01:43

score 0 · Answer 2 · answered Jun 22 '16 at 01:48

0

keyup is only triggered when the user stokes any of the keyboard input... So when you use mouse events like copy and paste it isn't triggered.

try using change instead of keyup

answered Jun 22 '16 at 01:48

Nishanth Matha

5,993
2
19
28

How to check if email exists with jQuery?Working only when typing email,but not when copy-paste?

2 Answers2