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count number of lines in string (http://jsbench.github.io/#4cc806b4507ae063efc81900cdfb9b02) #jsbench #jsperf
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<!DOCTYPE html> | |
<html> | |
<head> | |
<meta charset="utf-8"/> | |
<title>count number of lines in string</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> |
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"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 () { | |
// https://stackoverflow.com/questions/8488729 | |
// how-to-count-the-number-of-lines-of-a-string-in-javascript | |
const s = document.body.innerHTML; | |
}; | |
suite.add("match regex", function () { | |
// match regex | |
(s.match(/\n/g) || '').length | |
}); | |
suite.add("split string", function () { | |
// split string | |
s.split('\n').length | |
}); | |
suite.add("split regex", function () { | |
// split regex | |
s.split(/\n/).length | |
}); | |
suite.add("for loop", function () { | |
// for loop | |
var c = 0; | |
for (var i = 0; i < s.length; i++) | |
if(s[i] == '\n') c++; | |
}); | |
suite.add("for loop 2", function () { | |
// for loop 2 | |
var c = 0; | |
for (const t of s) if(t == '\n') c++; | |
}); | |
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("count number of lines in string"); | |
console.log(new Array(30).join("-")); | |
suite.run(); | |
}); |
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