如何使用 JavaScript 近似计算网站的连接速度?

2022-01-18 00:00:00 connection widget javascript

How to calculate approximately the connection speed of a website using JavaScript?

我想创建一个类似的 javascript 小部件，它将计算打开当前打开页面的速度.

I want to create a javascript widget like, which will calculate the speed opening the current opened page.

我在问这是否可以仅使用 javascript 来完成，想法是什么.

I am asking if this can be done using just javascript and what will be the idea.

更新

请注意，页面大小始终为未知.

Note that the page size is always Unknown.

推荐答案

这里是一个使用 AJAX 和 .Net 后端的示例，尽管它可以是任何东西.

Here's an example using AJAX with .Net backend, though it could be anything.

这里是一个使用图片的简单示例.

Here's a simpler example using an image.

关键是要有一个已知大小的页面/对象，并在浏览器检索它时捕获开始和结束时间.然后只需将大小除以某个 [时间单位] 即可得到每个 [时间单位] 的 [大小].然后用数学把它翻译成你想要的.

The key is to have a page/object of a known size and capture the start and end times as the browser retrieves it. Then simply divide the size by some [unit of time] to get [size] per [unit of time]. Then use math to translate this into whatever you want.

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