Change variable value in fail function

Question

I am currently struggling with $.getJSON() and resulting .fail() function. I am trying to get it so that when a $.getJSON() fails, it changes the variables value to something else - such as:

var mangoes = $.getJSON("mangoesurl.com/json").fail(mangoes="{value:0}");

I cannot use another variable as I am also using $.when() later to retrieve that data from the mangoes JSON.

Does anybody know if this is possible, how I can do it or an alternative? Any help is greatly appreciated, thanks.

var mangoes = $.getJSON("mangoesurl.com/json").fail(mangoes="{value:0}");
var mangoes2 = $.getJSON("mangoesurl.com/json2").fail(mangoes="{value:0}");
$.when(mangoes, mangoes2).then(data1, data2){

}

Answer 1

If I understand correctly, this is what you need:

var mangoes = $.getJSON("mangoesurl.com/json").fail(function(){
     return {value:0};
});

In this way mangoes is empty after the response. Basically this code gets the JSON but does nothing with it. To put the JSON result into mangoes you need this:

var mangoes = $.getJSON("mangoesurl.com/json")
.success(function(response){
     return response;
});
.fail(function(){
     return {value:0};
});

With the When sintax you can't assign content to mangoes...you have to change the logic

var mangoes, mangoes2;
var deferred1 = $.getJSON("mangoesurl.com/json");
var deferred2 = $.getJSON("mangoesurl.com/json2");
$.when(deferred1, deferred2).then(function(data1, data2){
     mangoes = data1;
     mangoes2 = data2;
}, function(error){
     mangoes || mangoes = {value:0};
     mangoes2 || mangoes2 = {value:0};
});