Question

I am trying to create an instant messaging site. Every ten seconds I want a javascript/ajax script to check if there are new messages. I thought that I could have a php page output 1 if there are. I have done the php coding, but can not get the javascript side to work. I have tried using $.get and am having a bit of trouble. Any help would be greatly appreciated.

Here is my ajax code:

var check;
function checkForMessages() {
    $.get("/checkmsg.php", function(data) {
        if(data == 1) {
            alert("There is a new message");
        }
    });
}

check = setInterval(checkForMessages, 10000);

My php code always outputs 1 for testing purposes

Answer 1

I’m guessing at the end of your php code you have this:

echo '1';

For your JS i suggest $.post():

jQuery.post( '/checkmsg.php', function(data) { 
    if (data.search('1') !== -1) {
        alert("There is a new message");
    } else {
        alert("Something went wrong.");
    }
});