SOURCE

var isH = true;
var willNewPhone = new Promise(
    function(resolve,reject){
        if(isH){
            var phone  = {
                brand:'xiaomi',
                color:'red'
            }
            resolve(phone);
        }else{
            // var reason  = new Error('she is no happy');
            reject(4);
        }
    }
)

var askM = function(){
    willNewPhone.then((data)=>{
        console.log(data);
    },(err)=>{
        console.log(err,'----reject');
    }).catch((err)=>{
        console.log(err,'------catch');
    })
}
askM();


var p1 = new Promise(
    function(rs,rj){
    rs('cg----')
})
p1.catch(res=>{
    console.log('--aaaa--',res
    )
})
var b = function(){
    p1.then((data)=>{
        console.log(data,'@@@@');
    },(err)=>{
        console.log('err11',err)
    })
}
b();