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
http://stevenbenner.com/2010/03/javascript-regex-trick-parse-a-query-string-into-an-object/
<script>
var query = 'category=4&product_id=2140&query=lcd+tv&hello=world';
function regex() {
var queryString = {};
query.replace(/([^?=&]+)(=([^&]*))?/g, function ($0, $1, $2, $3) {
queryString[$1] = $3;
});
return queryString;
}
function splitWhile() {
var i, item, parts, result;
if (query == null) query = "";
result = {};
parts = query.split("&");
i = parts.length;
while (i--) {
item = parts[i].split("=");
result[item[0]] = item[1];
}
return result;
};
function splitFor() {
var item, parts, result, _i, _len;
if (query == null) query = "";
result = {};
parts = query.split("&");
for (_i = 0, _len = parts.length; _i < _len; _i++) {
item = parts[_i];
item = item.split("=");
result[item[0]] = item[1];
}
return result;
};
</script>
Ready to run.
Test | Ops/sec | |
---|---|---|
regex |
| ready |
split with for loop |
| ready |
split with while loop |
| ready |
You can edit these tests or add more tests to this page by appending /edit to the URL.