Passing json from php to javascript veriable

Question

I am using a php to form a json object from sql and using json_encode($myarr) which is working perfectly. in my javascript i am using a util function to get the json which is also working fine.

var get_schedule_service = webservices.get_schedule + "/" + 0;
generic_get(get_schedule_service, function(response) {
    if (response) {
        console.dir(response);
    } else {
        alert('empty schedule');
    }
});

the above code outputs the proper json.

The problem i am facing is when i try to store the output in a javascript var i get an error that the var is undefined.

i have also tried putting the entire webserice in an array something like this:

var get_schedule_service = webservices.get_schedule + "/" + 0;
var my_json_array = generic_get(get_schedule_service, function(response) {
    if (response) {
        return response;
    }
});

If this is `ajax` thing, assuming so, then it will not be having value on the immediate step as this will be asynchronous.. You need to make use of `deferred` and `promise` object here. — Guruprasad J Rao, May 17 '16 at 07:21
yes, its a ajax request. get_generic is a util function im using for api calls — Maxxer, May 17 '16 at 07:26
Possible duplicate of [Pass JSON from php to javascript](http://stackoverflow.com/questions/5101196/pass-json-from-php-to-javascript) — Hossein, May 17 '16 at 07:27
What is `generic_get`? Please, provide the full definition (the full code). — Marc Compte, May 17 '16 at 07:33

score 0 · Answer 1 · answered May 17 '16 at 07:21

Since AJAX request is async by nature, you need to pass a callback like this, which can be called when the response is received:

var get_schedule_service = webservices.get_schedule + "/" + 0;
generic_get(get_schedule_service, function (response, myCallback) {
                if (response) {
                   myCallback(response);
                }
                });


function myCallback(response){
   console.log(response);
}

Passing json from php to javascript veriable

1 Answers1