Fun with bind/call prototypes

bind.js

// https://variadic.me/posts/2013-10-22-bind-call-and-apply-in-javascript.html
var bind = Function.prototype.call.bind(Function.prototype.bind);

var Ping = function(host, option) {
  // do stuff
  return this;
}

Ping.prototype.send = function() {
  // do more stuff
}

Ping.prototype.start = function (callback) {
  var send = bind(this.send, this);
  this.interval = setInterval(function () {
    send(callback);
  }, this.options.interval);
  send(callback);
};