如何对JavaScript代码进行基准测试？ [英] How can I benchmark JavaScript code?

问题描述

是否有帮助我对JavaScript代码进行基准测试的软件包？我不是指Firebug和这样的工具。

Is there a package that helps me benchmark JavaScript code? I'm not referring to Firebug and such tools.

我需要比较我实现的2个不同的JavaScript函数。我非常熟悉Perl的Benchmark（ Benchmark.pm ）模块，我正在寻找类似的东西JavaScript。

I need to compare 2 different JavaScript functions that I have implemented. I'm very familiar with Perl's Benchmark (Benchmark.pm) module and I'm looking for something similar in JavaScript.

重点是对JavaScript代码进行基准测试是否过分了？我可以只计算一次运行时间吗？

Has the emphasis on benchmarking JavaScript code gone overboard? Can I get away with timing just one run of the functions?

推荐答案

只需对每个函数进行多次迭代。一次迭代可能是不够的，但是（取决于你的函数有多复杂），接近100或甚至1000次迭代应该可以完成这项工作。

Firebug还有一个分析器，如果你想看看你的功能的哪些部分正在减慢它。

Firebug also has a profiler if you want to see which parts of your function are slowing it down.

编辑对于未来的读者，推荐JSPerf的以下答案应该是正确答案。我会删除我的，但我不能，因为它已被OP选中。基准测试不仅仅是运行多次迭代，而且JSPerf会为您完成这项工作。

To future readers, the below answer recommending JSPerf should be the correct answer. I would delete mine, but I can't because it has been selected by the OP. There is much more to benchmarking than just running many iterations, and JSPerf takes care of that for you.

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