為了不用改太動太多舊的程式,
所以在客戶端寫了一個類 Emitter 的東西.
記錄一下
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| <script type="text/javascript">
(function(window) {
var Emitter = function() {
};
Emitter.prototype.on = function(name, callback) {
this.emitterEvent = this.emitterEvent || {};
this.emitterEvent[name] = this.emitterEvent[name] || [];
this.emitterEvent[name].push(callback);
};
Emitter.prototype.emit = function(name) {
this.emitterEvent = this.emitterEvent || {};
if (this.emitterEvent.hasOwnProperty(name) === true) {
for(var i = 0, n = this.emitterEvent[name].length; i < n; i++){
this.emitterEvent[name][i].apply(this, Array.prototype.slice.call(arguments, 1));
}
}
};
Emitter.prototype.mixin = function(object) {
Object.keys(Emitter.prototype).forEach(function(name) {
object.prototype[name] = Emitter.prototype[name];
});
};
window.Emitter = new Emitter();
})(window);
</script>
|
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| <script type="text/javascript">
var Ticker = function() {
var self = this;
setInterval(function() {
self.emit('tick', new Date(), "ohter parameters");
}, 1000);
}
Emitter.mixin(Ticker);
new Ticker().on('tick', function(data, params) {
console.log(data, params);
})
</script>
|
