Run results for: Extracting part of long URL string via various methods3

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/84.0.4147.125 Safari/537.36

Browser: Chrome 84

Operating system: Windows

Device Platform: Desktop

Date tested: 3 years ago

Test name	Executions per second
Match RegEx via Lookahead and Capture Group	1686475.0 Ops/sec
Replace Unwanted Parts with Replace RegEx	84762.6 Ops/sec
String Split and Reference Array Index with length -1 (const intermediate)	3179876.0 Ops/sec
String Split and Reference Array Index with length -1 (var intermediate)	3314952.0 Ops/sec
String Split and Reference Array Index with length -1 (no intermediate var)	3139441.0 Ops/sec
String Split with pop	3121675.0 Ops/sec

Script Preparation code:

var strUrl = 'https://website.com/?blahRef=766f2afedcc311ea3333a6ba9e46292aae400001&sdtid=14265950&sdop=1&sdpid=139549172&sdfid=9&lno=1&trd=https%20www%20othersite%20com%20p%20germ%20x%20o%20&pv=&au=&sdttt=jjj%7Crecombbb%7C25b08e67-1a86-44e1-aae9-73920b9b44c2&u2=https%3A%2F%2Fwww.website.com%2Fp%2Fgerm-x-original-hand-sanitizer-32-fl-oz%2F-%2FA-797633334642';

Tests:

Match RegEx via Lookahead and Capture Group
strUrl.match(/(?:.+)(?=http)(.+)/)[1];
Replace Unwanted Parts with Replace RegEx
strUrl.replace(/(?:.+)(?=http)/g,'');
String Split and Reference Array Index with length -1 (const intermediate)
var arrStringSplitLen = strUrl.split('http'); 'http'+arrStringSplitLen[arrStringSplitLen.length-1];
String Split and Reference Array Index with length -1 (var intermediate)
'http'+strUrl.split('http').pop();
String Split and Reference Array Index with length -1 (no intermediate var)
strUrl.substr(strUrl.lastIndexOf('http'));
String Split with pop
strUrl.slice(strUrl.lastIndexOf('http'));

Run results for: Extracting part of long URL string via various methods3

Match RegEx via Lookahead and Capture Group

Replace Unwanted Parts with Replace RegEx

String Split and Reference Array Index with length -1 (const intermediate)

String Split and Reference Array Index with length -1 (var intermediate)

String Split and Reference Array Index with length -1 (no intermediate var)

String Split with pop