面向对象编程,链式调用,先输出‘hello’,10秒之后,输出‘world’
let obj={
awaitTime:null,
consoleMsg:function(v){
if(this.awaitTime){
setTimeout(console.log(v),this.awaitTime*1000);
}else{
console.log(v)
}
return obj;
},
awaitFn:function(time){
this.awaitTime = time;
return obj;
}
}
obj.consoleMsg('hello').awaitFn(10).consoleMsg('world')