I am trying to find a method to verify the existence of a Facebook user based on their ID.
As far as I understand, there is a Graph API that can provide a Facebook user's profile picture using their ID in this format:
I have noticed that if an invalid ID is entered, it results in an error message. However, my understanding of JavaScript is limited and I am unsure how to interpret these error messages.
Give this jQuery code a shot.
var picLink= "https://graph.facebook.com/" + id + "/image";
$.ajax({
url : picLink,
statusCode: {
200: function() {
alert("The user exists");
},
404: function() {
alert( "User does not exist" );
}
}
});
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