编辑代码

//JSRUN引擎2.0，支持多达30种语言在线运行，全仿真在线交互输入输出。 
async function async1(){
    console.log('async1 start')
    await async2();
    console.log("async1 end")
}
new Promise(function(resolve){
    console.log('promise1')
    resolve()
    console.log('*******')
}).then(function(){
    console.log("promise2")
})
async function async2(){
    console.log('async2')
}
console.log("script start")

setTimeout(function(){
    console.log("setTimeout")
},0)

async1()


console.log("script end")