I'm getting that error when I call this javascript function:

function kickUser(id_userChat){
$.post("chatFuncs.php", { action: "kick", id_user: id_userChat });  
}

this "kickUser" function is generated for every user connected to my chat box, like this

$listUsers .= '<img src="imgUsers/'.$DBClass->nomImg($rowUsers['id_user'],$posImg).'" height="'.$heightImg.'" width="'.$widhImg.'"/>
<span class="styleMsg">'.$rowUser['nameUser'].'</span>&nbsp;
<a href="#" class="BtnKick" onClick="kickUser('.$rowUsers['id_user'].')">Kick</a></br>';

and the action "kick" is just an update to my database where I remove the user from my chatUsers table

If I change $rowUsers['id_user'] for $rowUsers['userName'] the error changes to: ReferenceError: 'userName' is not defined (i changed the real name of the user for 'userName' just for this example).

I'm getting that error when I call this javascript function:

function kickUser(id_userChat){
$.post("chatFuncs.php", { action: "kick", id_user: id_userChat });  
}

this "kickUser" function is generated for every user connected to my chat box, like this

$listUsers .= '<img src="imgUsers/'.$DBClass->nomImg($rowUsers['id_user'],$posImg).'" height="'.$heightImg.'" width="'.$widhImg.'"/>
<span class="styleMsg">'.$rowUser['nameUser'].'</span>&nbsp;
<a href="#" class="BtnKick" onClick="kickUser('.$rowUsers['id_user'].')">Kick</a></br>';

and the action "kick" is just an update to my database where I remove the user from my chatUsers table

If I change $rowUsers['id_user'] for $rowUsers['userName'] the error changes to: ReferenceError: 'userName' is not defined (i changed the real name of the user for 'userName' just for this example).

• javascript
• firebug

• 5 Why is this tagged java? Do you mean javascript? – anoopelias Commented Feb 19, 2013 at 19:52
• 1 yeah i meant javascript. This is my first time asking – Mollo Commented Feb 19, 2013 at 20:25
• No Problem mate. Wele aboard. – anoopelias Commented Feb 22, 2013 at 16:53

2 Answers 2

Identifiers in JavaScript can't begin with a number; they must begin with a letter, $ or _.

I'm guessing it's ing from this:

onclick="kick_user('.$rowUsers['id_user'].')">Kick</a>

If you mean to pass a string, then you need to quote the value being passed.

onclick="kick_user(\"'.$rowUsers['id_user'].'\")">Kick</a>

I don't know PHP, so maybe you need different escaping, but this should give you the idea.

The resulting JavaScript code will be

kickUser(userName)

…and obviously there is no js variable userName. You want to pass a string instead:

kickUser('userName');

So add the quotes/apostrophes to the output, and don't forget to escape the $rowUsers['userName'] properly. It's quite the same for $rowUsers['id_user'], which seems to have output even an invalid identifier.