Run results for: Excel content type using RegEx vs direct comparison

Run details:

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

Browser: Chrome 142

Operating system: Windows

Device Platform: Desktop

Date tested: 8 months ago

Direct comparison

55.8M/s

RegEx

7.0M/s

View exact numbers

Test name	Executions per second
✓ Direct comparison	55,826,100 Ops/sec
RegEx	6,986,259 Ops/sec

HTML Preparation code:

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

Script Preparation code:

const regex = /sheet|excel|spreadsheet|officedocument/i

function compare(mime) {
  return mime == 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet'
}

Tests:

RegEx
regex.test('application/vnd.openxmlformats-officedocument.spreadsheetml.sheet') regex.test('text/html')
Direct comparison
compare('application/vnd.openxmlformats-officedocument.spreadsheetml.sheet') compare('text/html')