Ping.js is a small and simple Javascript library to ping response times to servers in pure Javascript! This is useful for when you want to display realtime ping times on a status page which are relative to the user.

JS Fiddle Example: https://jsfiddle.net/alfg/sr0tpn4x/

Example in jQuery: https://jsfiddle.net/alfg/xjqbvt2o/

var p = new Ping();

p.ping("https://github.com", function(data) {
  document.getElementById("ping-github").innerHTML = data;
});

var p = new Ping();

Creates a ping request to the source.

source IP address or website URL, including protocol and port (optional). Example: https://example.com:8080

callback Callback function which returns the response time in milliseconds.

timeout Optional - Set a timeout in milliseconds.

Install project:

git clone https://github.com/alfg/ping.js.git
cd ping.js
npm install
npm install -g grunt-cli

Run grunt to build distribution files:

grunt

Open demo/index.html in a browser to test results.

Javscript itself doesn't have a native way of sending a "ping", so results may not be completely accurate. Since ajax requests are affected by cross-domain issues (CORS), they are blocked by default. ping.js is using a method of faking an image loading from any host and timing the response time. If there's a better way to do this in Javascript, feel free to create an issue, or pull request so I can review.

MIT License © Alfred Gutierrez