How can wait for ajax call end before relooping in foreach?

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I am trying to use Promises but I don’t know if in this case, are useful.

$.getJSON("url", "data", function(json) {
    json.forEach(function(item) {
        //do something
        $.get("url", "data", function(response) {
            //MAKE SURE THIS BODY IS SOLVED BEFORE RELOOP???
        });
    })
})

The only way I found is to use ajax with async as false.

Is there a way to solve this?

Maybe using Promises for example? I tried to think a way to use Promises in a foreach loop but didn’t find any solution.

I tried this one:

$.getJSON("url", "data", function(json) {
    json.forEach(function(item) {
        //do something
        when($.get("url", "data") {
            //do something
        })).done(function(response){
            //do something
        });
    })
})

But it doesn’t work. foreach always relooped.

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