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function test(){
var myFirstPromise = new Promise(function(resolve, reject){ console.log('in promise') resolve("成功!"); //代码正常执行！ }); return myFirstPromise
}
test().then(function(successMessage){
console.log("Yay! " + successMessage);
});
![[Web front-end] Node.js quick start](https://img.php.cn/upload/course/000/000/067/662b5d34ba7c0227.png)
function test(){
}
test().then(function(successMessage){
});