jsPerf.app is an online JavaScript performance benchmark test runner & jsperf.com mirror. It is a complete rewrite in homage to the once excellent jsperf.com now with hopefully a more modern & maintainable codebase.
jsperf.com URLs are mirrored at the same path, e.g:
https://jsperf.com/negative-modulo/2
Can be accessed at:
https://jsperf.app/negative-modulo/2
<div></div>
<script>
var count = 100;
var divs = new Array(count);
var div = document.getElementsByTagName('div')[0]
function testAppend(div) {
var add = document.createElement('div');
for (var i = 0; i<=1000;i++) {
div.appendChild(add);
}
}
function testPrepend(div) {
var add = document.createElement('div');
for (var i = 0; i<=1000;i++) {
div.insertBefore(add, div.firstChild);
}
}
function testInnerHTML(div) {
for (var i = 0; i<=1000;i++) {
div.innerHTML = "<div></div>";
}
}
function testInnerHTMLBuffer(div) {
var buffer=[];
for (var i = 0; i<=1000;i++) {
buffer.push("<div></div>")
}
div.innerHTML = buffer.join("");
}
function testInsert(div) {
var add = document.createElement('div');
for (var i = 0; i<=1000;i++) {
div.insertBefore(add, div[0]);
}
}
</script>
Ready to run.
Test | Ops/sec | |
---|---|---|
Append |
| ready |
Prepend |
| ready |
Insert |
| ready |
innerHTML |
| ready |
innerHTML + buffer |
| ready |
You can edit these tests or add more tests to this page by appending /edit to the URL.