Benchmark: Benchmark 2: Expressions / Placeholders

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);

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Test 1 — eval (expression):
Test 2 — new Function (expression, no cache):
Test 3 — new Function (expression, cached):
Test 4 — script tag (expression):

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: 5 months ago)

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/OS: Chrome 146 on Windows

View result in a separate tab

Test 3 — new Function (expression, cached):

113.7M/s

Test 1 — eval (expression):

12.1M/s

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

2.6M/s

Test 4 — script tag (expression):

115K/s

View exact numbers

Test name	Executions per second
✓ Test 3 — new Function (expression, cached):	113,740,376 Ops/sec
Test 1 — eval (expression):	12,103,658 Ops/sec
Test 2 — new Function (expression, no cache):	2,595,849 Ops/sec
Test 4 — script tag (expression):	115,228 Ops/sec

Benchmark 2: Expressions / Placeholders (version: 1) Benchmark.js

eval vs new Function

Comparing performance of: `Test 1 — eval (expression): vs Test 2 — new Function (expression, no cache): vs Test 3 — new Function (expression, cached): vs Test 4 — script tag (expression):`

Created: 5 months ago by: Guest

Go to the latest result

Test 1 — eval (expression):

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

Test 3 — new Function (expression, cached):

Test 4 — script tag (expression):

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

Benchmark 2: Expressions / Placeholders (version: 1) Benchmark.js

eval vs new Function

Comparing performance of: Test 1 — eval (expression): vs Test 2 — new Function (expression, no cache): vs Test 3 — new Function (expression, cached): vs Test 4 — script tag (expression):

Created: 5 months ago by: Guest

Go to the latest result

Test 1 — eval (expression):

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

Test 3 — new Function (expression, cached):

Test 4 — script tag (expression):

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

Related benchmarks

Comparing performance of: `Test 1 — eval (expression): vs Test 2 — new Function (expression, no cache): vs Test 3 — new Function (expression, cached): vs Test 4 — script tag (expression):`