Created
December 12, 2017 06:36
-
-
Save RubaXa/aed00af2bf5a7393a934c517018060b9 to your computer and use it in GitHub Desktop.
Repaint: offsetWidth vs. getBoundingClientRect (http://jsbench.github.io/#aed00af2bf5a7393a934c517018060b9) #jsbench #jsperf
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
<!DOCTYPE html> | |
<html> | |
<head> | |
<meta charset="utf-8"/> | |
<title>Repaint: offsetWidth vs. getBoundingClientRect</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> |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
"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 result = 0; | |
var element = document.createElement('div'); | |
element.style.position = 'absolute'; | |
element.style.top = '-300px'; | |
element.style.left = '-300px'; | |
document.body.appendChild(element); | |
}; | |
Benchmark.prototype.teardown = function () { | |
if (result === 0) { | |
throw 'error'; | |
} | |
}; | |
suite.add("offsetWidth", function () { | |
/* offsetWidth */ | |
element.style.padding = Math.random() * 100 + 'px'; | |
result += element.offsetWidth; | |
}); | |
suite.add("getBoundingClientRect()", function () { | |
/* getBoundingClientRect() */ | |
element.style.padding = Math.random() * 100 + 'px'; | |
result += element.getBoundingClientRect().width; | |
}); | |
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("Repaint: offsetWidth vs. getBoundingClientRect"); | |
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