Run results for: Push vs spread vs copy and push, for appending single item

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 11_2_1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/88.0.4324.192 Safari/537.36

Browser: Chrome 88

Operating system: Mac OS X 11.2.1

Device Platform: Desktop

Date tested: 3 years ago

Tests:

Push
var arr = ["This", "is", "an", "array", "of", "strings", "which", "might", "be", "copied"]; arr.push("foo");
Spread
var arr = ["This", "is", "an", "array", "of", "strings", "which", "might", "be", "copied"]; arr = [...arr, "foo"];
Copy and push
var arr = ["This", "is", "an", "array", "of", "strings", "which", "might", "be", "copied"]; arr = arr.slice(); arr.push("foo");