Run results for: String concatenation v.s. ES6 template

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_4) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/66.0.3359.181 Safari/537.36

Browser: Chrome 66

Operating system: Mac OS X 10.13.4

Device Platform: Desktop

Date tested: 5 years ago

Test name	Executions per second
Concatenation	21239.9 Ops/sec
ES6 template	22328.0 Ops/sec
Array join	8438.9 Ops/sec

Script Preparation code:

function concatenation(a, b, c) {
	return "a = " + a + ", b = " + b + ", c = " + c;
}

function template(a, b, c) {
 	return `a = ${a}, b = ${b}, c = ${c}`;
}

var arrayTemplate = ["a = ", null, ", b = ", null, ", c = ", null];
function arrayJoin(a, b, c) {
  	arrayTemplate[1] = a;
  	arrayTemplate[3] = b;
  	arrayTemplate[5] = c;
  	return arrayTemplate.join("");
}

Tests:

Concatenation
for (var i = 0; i < 100; i++) { window.a = concatenation(i, "random", "text"); }
ES6 template
for (var i = 0; i < 100; i++) { window.a = template(i, "random", "text"); }
Array join
for (var i = 0; i < 100; i++) { window.a = arrayJoin(i, "random", "text") }

Run results for: String concatenation v.s. ES6 template

Concatenation

ES6 template

Array join