Observer = Class.create({
initialize: function() {
this.callbacks = [];
},
prependCallback = function(callback) {
this.callbacks.unshift(callback);
},
appendCallback = function(callback) {
this.callbacks.push(callback);
},
runCallbacks = function() {
this.callbacks.each(
function(callback) {
callback();
}
);
}
});
bunchOfCallbacks = new Observer();
bunchOfCallbacks.appendCallback(function(){alert('second');});
$('anything').observe('anyEvent', bunchOfCallbacks.runCallbacks);
bunchOfCallbacks.prependCallback(function(){alert('first');});
我建議不依賴於綁定的順序......也許有另一種方式做你想要什麼。使onsubmit有一個函數,在做它正在做的事情之前觸發不同的自定義事件.... – 2010-06-10 12:23:54
優秀的點,我想我可能剛剛找到解決方案。我的問題的背景是一個Rails的remote_form(),它增加了onsubmit Ajax調用。現在我只需在此Ajax請求上添加一個創建調用即可預先添加其他事件處理程序。謝謝! – chinshr 2010-06-10 12:39:14