jquery post() response not comparing to string -

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in advance help, i'm having problem response of post(), when trying compare string, code is:

$.post( "cand.php?id=<?php echo $user_id; ?>", { accion: "eliminar"})  	.done(function(data) {  		console.log ($.type(data));  		console.log (data);  		console.log (data === 'ok');   });

and console answers are:

string

ok

false

as cas see data var string value of "ok" when compare string, it's false


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