Run results for: _.replace(line, /\r\n|\n/, '') vs .indexOf('/n') #3

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/142.0.0.0 Whale/4.35.351.13 Safari/537.36

Browser: Chrome 142

Operating system: Windows

Device Platform: Desktop

Date tested: 7 months ago

_.replace

220K/s

.indexOf(/n)

212K/s

View exact numbers

Test name	Executions per second
✓ _.replace	219,678 Ops/sec
.indexOf(/n)	211,570 Ops/sec

HTML Preparation code:

<!--your preparation HTML code goes here-->

Script Preparation code:

// 1. 줄바꿈이 없는 매우 긴 문자열 생성 (약 100KB)
var longStr = "a".repeat(100000); 

// 2. 끝부분에만 줄바꿈이 있는 긴 문자열
var longStrWithNewline = longStr + "\n";

var regex = /\r\n|\n/;

Tests:

_.replace
// 줄바꿈이 없어도 전체 스캔 발생 _.replace(longStr, regex, '');
.indexOf(/n)
// 줄바꿈이 없으므로 즉시 false 반환 -> replace 실행 안 함 if (longStr.indexOf('\n') > -1 || longStr.indexOf('\r') > -1) { longStr.replace(regex, ''); }