Run results for: slice vs substring performance

Run details:

User agent: Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/69.0.3497.81 Safari/537.36 Maxthon/5.3.8.2000

Browser: Maxthon 5

Operating system: Windows 7

Device Platform: Desktop

Date tested: 3 years ago

Test name	Executions per second
slice	6801821.0 Ops/sec
substring	6830154.0 Ops/sec

Script Preparation code:

var str = '<div>AAA A<p style="text-align: center;"><b><span style="font-family: "times new roman"; font-size: 12pt;"></span><span style="font-family: "times new roman"; font-size: 12pt; color: rgb(0, 0, 0); background-color: rgb(255, 255, 255);">AAA A</span></b><span style="font-family: "times new roman"; font-size: 12pt;"></span></p></div>';

Tests:

slice
var str1 = str.slice(20,50)
substring
var str1 = str.substring(20,50)