var promiseResolve, promiseReject;

​

var promise = new Promise(function(resolve, reject){

  promiseResolve = resolve;

  promiseReject = reject;

})

.then(function() {

  console.log('resolved!!')

})

.catch(function(err){

    console.log('error 1: ', err);

});

​

function test() {

  setTimeout(function() {

    if (Math.random() > 0.5) {

      throw Error('uncaught!')

    }

    promiseResolve()

  },15)

}

​

test()