promise的all和race的效果对比

Posted 2022-12-01 勇敢*牛牛

promise的all和race的效果对比

function fun1()
           return new Promise(_=>
                setTimeout(()=>
                    _("1")
                ,1000)
           )
        


function fun2()
    return new Promise(_=>
         setTimeout(()=>
             _("2")
         ,2000)
    )
 

Promise.all([fun1(),fun2()]).then((ret)=>
       console.log("all",ret);
)

Promise.race([fun1(),fun2()]).then((ret)=>
   console.log("rece",ret);
)