問(wèn)題描述

問(wèn)題解答

function test(){

var myFirstPromise = new Promise(function(resolve, reject){ console.log(’in promise’) resolve('成功!'); //代碼正常執(zhí)行！});return myFirstPromise

}

test().then(function(successMessage){

console.log('Yay! ' + successMessage);

});