我有JavaScript腳本/庫幾乎工作得很好,除了我似乎無法圍繞如何添加刪除方法。例如你會做這樣的事情(jQuery的添加剛剛得到更清潔,更容易理解的例子,但我的腳本不需要jQuery的):如何在腳本中實施「刪除」方法?
//Adds a "widget" to the memory
Core.extend('widget',function(m){
$(window).click(function(){ alert(m); });
});
//Actually loads widget, and will alert "hello world" each click on the body
Core.load('widget', 'hello world');
//*SHOULD* make it so that when I click on the window the alert no longer shows
Core.remove('widget');
這裏是我寫
var Core = function(){
var debug = function(m){
console.log(m);
}
var errors = false;
var extensions = {};
var listeners = {};
var extend = function(name,func){
name = name || '';
func = func || function(){};
if(typeof extensions[name] == 'undefined'){
extensions[name] = func;
}
else{
if(errors){
throw new Error('Core extend() error: the extension "'+name+'" already exists');
}
}
}
var load = function(name,params){
name = name || '';
params = params || '';
if(typeof extensions[name] !== 'undefined'){
extensions[name](params);
}
else{
if(errors){
throw new Error('Core load() error: the extension "'+name+'" doesn\'t exist');
}
}
}
//Sends out a notification to every listener set with this name
var push = function(name, value){
name = name || '';
value = value || '';
if(typeof listeners[name] !== 'undefined'){
listeners[name].call(this,value);
}
else{
if(errors){
throw new Error('Core push() error: the extension "'+name+'" doesn\'t exist');
}
}
}
//Saves a function to the listeners object to be called by push()
var listen = function(name, callback){
name = name || '';
callback = callback || function(){};
listeners[name] = callback;
}
//Removes an extension from being called
var remove = function(name){
name = name || '';
if(typeof extensions[name] !== 'undefined'){
delete extensions[name];
}
else{
if(errors){
throw new Error('Core remove() error: the extension "'+name+'" doesn\'t exist');
}
}
}
return {
extend:extend,
load:load,
remove:remove,
push:push,
listen:listen
}
}();
代碼
示例使用情形:
http://jsbin.com/enopup
是的,我知道關於unbind和removeEventListener,但我很好奇是否有任何方法或「設計模式」讓我用一個簡單的.remove()方法快速解構方法。 –