Question

98

Javascript calling function from inside same function

rated 0 times [ 99] [ 1] / answers: 1 / hits: 19817 / 10 Years ago, sun, december 21, 2014, 12:00:00

I have a function that does several DDBB calls, so it is asynchronous.

I need to call the function and check a data value (winner) in the JSON object it returns. If it is true i need to call the function again until winner == false.

I can't use while because it is not asynchronous, how can i do this?

  someFunction(function(result) {

     // if result.winner == true repeat 

  })

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annaw

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Total Points: 18

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3 Years ago

answered 10 Years ago harleyaleenag · Accepted Answer

You can call the same callback function again until condition is true:

someFunction(function repeat(result) {

    if (result.winner) {

        someFunction(repeat);

    }

});

Check the demo below.

someFunction(function repeat(result) {

    document.body.innerHTML += '<br>' + result.winner;

    if (result.winner) {

        someFunction(repeat);

    }

});



var results = [true, true, true, false];

function someFunction(callback) {

    setTimeout(function() {

        callback({winner: results.shift()});

    }, (Math.random() + 1) * 1000 | 0);

}