Run results for: Benchmark 2: Expressions / Placeholders

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/146.0.0.0 Safari/537.36

Browser: Chrome 146

Operating system: Windows

Device Platform: Desktop

Date tested: 5 months ago

Benchmark engine: Benchmark.js

Test 3 — new Function (expression, cached):

121.7M/s

Test 1 — eval (expression):

12.1M/s

Test 2 — new Function (expression, no cache):

2.6M/s

Test 4 — script tag (expression):

106K/s

View exact numbers

Test name	Executions per second
✓ Test 3 — new Function (expression, cached):	121,651,872 Ops/sec
Test 1 — eval (expression):	12,102,649 Ops/sec
Test 2 — new Function (expression, no cache):	2,636,792 Ops/sec
Test 4 — script tag (expression):	106,121 Ops/sec

Script Preparation code:

var expression = 'return a === b';
var cachedExprFn = new Function('a', 'b', expression);

Tests:

Test 1 — eval (expression):
var a = "returned", b = "returned"; eval('a === b');
Test 2 — new Function (expression, no cache):
new Function('a', 'b', 'return a === b')("returned", "returned");
Test 3 — new Function (expression, cached):
cachedExprFn("returned", "returned");
Test 4 — script tag (expression):
var s = document.createElement('script'); s.textContent = '"returned" === "returned"'; document.head.appendChild(s); document.head.removeChild(s);