Run results for: filter + findIndex

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.14; rv:72.0) Gecko/20100101 Firefox/72.0

Browser: Firefox 72

Operating system: Mac OS X 10.14

Device Platform: Desktop

Date tested: 4 years ago

Test name	Executions per second
filter + findIndex	54634.1 Ops/sec
while loop	59536.6 Ops/sec

Tests:

filter + findIndex
const childNodes = [ { nodeId: 1, type: 'element' }, { nodeId: 2, type: 'comment' }, { nodeId: 3, type: 'element' }, { nodeId: 4, type: 'element' } ] const index = childNodes .filter(node => node.type === 'element') .findIndex(node => node.nodeId === 3) console.log(index)
while loop
const childNodes = [ { nodeId: 1, type: 'element' }, { nodeId: 2, type: 'comment' }, { nodeId: 3, type: 'element' }, { nodeId: 4, type: 'element' } ] let i = 0 let index = 0 while(childNodes[i].nodeId !== 3) { if(childNodes[i].type === 'element') { index++ } i++ } console.log(index)