Javascript/AJAX script to check if PHP page outputs 1

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

What code do you have already? Post the PHP code and your attemps at the js code — PitaJ
– PitaJ, Commented May 29, 2012 at 2:16
get firebug or use the debuggger in chrome; look at the ajax/xhr responses and see what it's telling you. it won't return 1 for instance...I think it's a string, possibly something different depending on what you set for dataType. — mpen
– mpen, Commented May 29, 2012 at 2:22
try to use developer tools and firebug first to check if there are errors — rjmcb
– rjmcb, Commented May 29, 2012 at 2:38

PitaJ · Accepted Answer · 2012-05-29 02:30:41Z

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.");
    }
});

edited May 29, 2012 at 2:30

answered May 29, 2012 at 2:24

PitaJ

15.4k6 gold badges43 silver badges58 bronze badges

Sign up to request clarification or add additional context in comments.

13 Comments

Ethan H Over a year ago

That doesn't work either :( - doesn't output anything even though the page outputs 1

PitaJ Over a year ago

@ethanh - wut browser r u using, and does it echo "1" or echo 1

Ethan H Over a year ago

Also your code gives me TypeError: Object bound: function () { return document.getElementById.apply(document, arguments) } has no method 'post' in the Chrome javascript console

PitaJ Over a year ago

@ethanh - Do you have jquery set up?

PitaJ Over a year ago

@ethanh - You need to include it in the page, I updated the script, try it now.

|

Collectives™ on Stack Overflow

Javascript/AJAX script to check if PHP page outputs 1

1 Answer 1

13 Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

13 Comments

Your Answer

Sign up or log in

Post as a guest

Related