Benchmark: reassign vs create new

Tests:

new variable
var x = 10; var x2 = x*x; var y = 10; var y2 = y*y; var z = 10; var z2 = z*z; var h = 10; var h2 = h*h; console.log(x, x2);
reassign
var x = 10; var x2 = x*x; x = 11; x2 = x*x; x = 12; x2 = x*x; x = 13; x2 = x*x; console.log(x, x2);

Rendered benchmark preparation results:

Previous results

Test case name	Result
new variable
reassign

ⓘ Get performance results from real users on your website with Request Metrics.

Latest run results:

Run details: (Test run date: 6 years ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.13; rv:59.0) Gecko/20100101 Firefox/59.0

Browser/OS: Firefox 59 on Mac OS X 10.13

Test name	Executions per second
new variable	40177.5 Ops/sec
reassign	39904.5 Ops/sec

reassign vs create new (version: 0)