如何使用Performance的Mark快速统计耗时

Posted 2021-09-07 张驰Terry

1. 统计两个时刻的过程d1

performance.mark('start1');
  

setTimeout(()=>{
   performance.mark('end1')
 performance.measure('d1', 'start1', 'end1')
 console.log(performance.getEntriesByName('d1')[0]);
},1000)

2. 统计多个过程d1

function sta(){
    performance.mark('start1');


    setTimeout(()=>{
       performance.mark('end1')
     performance.measure('d1', 'start1', 'end1')
    },1000)
}

let count = 10;
setInterval(()=>{
    if(count>0){
            sta();
            count--;
    }else{
        performance.getEntriesByName('d1');
    }

},2000);