Skip to content

Instantly share code, notes, and snippets.

@mzvonar

mzvonar/index.html

Created October 13, 2016 09:56
Show Gist options
  • Save mzvonar/7b54875689d6339e2b935e4366c634d7 to your computer and use it in GitHub Desktop.
Save mzvonar/7b54875689d6339e2b935e4366c634d7 to your computer and use it in GitHub Desktop.
Download ZIP
slice vs substring vs substr (http://jsbench.github.io/#7b54875689d6339e2b935e4366c634d7) #jsbench #jsperf
Raw
index.html
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8"/>
<title>slice vs substring vs substr</title>
<script src="https://cdnjs.cloudflare.com/ajax/libs/benchmark/1.0.0/benchmark.min.js"></script>
<script src="./suite.js"></script>
</head>
<body>
<h1>Open the console to view the results</h1>
<h2><code>cmd + alt + j</code> or <code>ctrl + alt + j</code></h2>
</body>
</html>
Raw
suite.js
"use strict";
(function (factory) {
if (typeof Benchmark !== "undefined") {
factory(Benchmark);
} else {
factory(require("benchmark"));
}
})(function (Benchmark) {
var suite = new Benchmark.Suite;
Benchmark.prototype.setup = function () {
var string = "I am the god of hellfire, and I bring you...";
};
suite.add("var substring = string.slice(17, 25);", function () {
var substring = string.slice(17, 25);
});
suite.add("var substring = string.substring(16, 24);", function () {
var substring = string.substring(16, 24);
});
suite.add("var substring = string.substr(16, 8);", function () {
var substring = string.substr(16, 8);
});
suite.on("cycle", function (evt) {
console.log(" - " + evt.target);
});
suite.on("complete", function (evt) {
console.log(new Array(30).join("-"));
var results = evt.currentTarget.sort(function (a, b) {
return b.hz - a.hz;
});
results.forEach(function (item) {
console.log((idx + 1) + ". " + item);
});
});
console.log("slice vs substring vs substr");
console.log(new Array(30).join("-"));
suite.run();
});
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment