setInterval gives Type Error pjs is undefined

chrisjmears · March 2014

Well, Im making progress. I finally got JSON into processing. Now I want to get it to update ever 4 seconds. In the console I can see the setInterval being called every 4 seconds so I know that bit of code seems to work, however it gives a Type Error saying pjs is undefined when I call the function from the SetInterval. It works fine when I call it from the onClick. Im struggling with javascript

<!DOCTYPE html> Print Text

<script src="processing.js"></script>
    <script src="http://ajax.googleapis.com/ajax/libs/jquery/1.8.2/jquery.min.js"></script>
<script>

setInterval(getLastData,4000);

function getLastData(id)
{   
    var created_at;
    var field1;
    var field2;
    var field3;
    var field4;
    var field5;
    var field6;
    var field7;
    var field8;
    var status;

    var pjs = Processing.getInstanceById(id);
    $.getJSON('https://api.thingspeak.com/channels/5384/feed/last.json?&status=true&callback=?', function(data) {

    created_at = data.created_at;
    field1 = data.field1;
    field2 = data.field2;
    field3 = data.field3;
    field4 = data.field4;
    field5 = data.field5;
    field6 = data.field6;
    field7 = data.field7;
    field8 = data.field8;
    status = data.status;       
    pjs.ParseData(created_at, field1, field2, field3, field4, field5, field6, field7, field8, status);
    }); 
}
</script>

GoToLoop · March 2014

Have you taken a look @ my JS experiments in your other thread: :-t
http://forum.processing.org/two/discussion/3963/a-little-further-progress-but-now-getting-object-object

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setInterval gives Type Error pjs is undefined

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