new Promise(function(resolve){
console.log('马上执行for循环');
for(var i = 0; i < 1000; i++){
resolve();
console.log(i);
}
}).then(function(){
console.log('执行then函数')
});
new Promise(function(resolve){
console.log('马上执行for循环');
for(var i = 0; i < 1000; i++){
resolve();
console.log(i);
}
}).then(function(){
console.log('执行then函数')
});