Simple JavaScript Hook System

var hooks = {}; // store all hooks here function on(name, fn) { name = name.split('.'); if (!hooks[name[0]]) hooks[name[0]] = {}; var i = name[1] || Object.keys(hooks[name[0]]).length; hooks[name[0]][i] = fn; } function off(name) { if (!name) { return hooks = {}; } name = name.split('.'); if (name[1]) { delete hooks[name[0]][name[1]]; } else { delete hooks[name[0]]; } } function trigger(name, param) { name = name.split('.'); if (!hooks[name[0]]) hooks[name[0]] = {}; if (name[1]) { if (hooks[name[0]][name[1]]) hooks[name[0]][name[1]].apply({}, param); } else { for (var i in hooks[name[0]]) { hooks[name[0]][i].apply({}, param); } } } /* // add a `click` hook on("click", function(x) { alert('test ' + x + ' ok!'); }); // add a `click` hook with `foo` namespace on("click.foo", function(x) { alert('test ' + x + ' foo ok!'); }); // remove all `click` hooks off("click"); // remove `click.foo` hook only off("click.foo"); // trigger all `click` hooks trigger("click", ['this will be the `x`', 'this will be the second function parameter…']); // trigger `click.foo` hook only trigger("click.foo", ['this will be the `x`', 'this will be the second function parameter…']); */