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??:
??? ??? ?????? ??? ?? ????
??:
performance.now() ??
performance.now() API? -?? ?? ?? ??? ???? ??? ????????. ??? ?? ??? ????? ?? ??? ????.
var startTime = performance.now();
doSomething(); // <---- Measured code goes between startTime and endTime
var endTime = performance.now();
console.log(`Call to doSomething took ${endTime - startTime} milliseconds`);
Node.js? ?? ?? ?? ???? ?????.
const { performance } = require('perf_hooks');
console.time ??
console.time? ?????? ?? ??? ???? ??? ??? ?????. ?? ??? ??? ????.
console.time('doSomething');
doSomething(); // <---- The function you're measuring time for
console.timeEnd('doSomething');
??: ???? ???? ????? console.time() ? console.timeEnd()? ??? ???? ???? ???.
?? ??:
- [MDN ?? console.time()](https://developer.mozilla.org/en-US/docs/Web/API/console/time)
- [??? ?? Node.js ??](https:// nodejs.org/api/perf_hooks.html)
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