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demo.html
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Protypal</title>
<script>
//原型
/*var myMammal={
name:'Herb the Mammal',
get_name:function(){
return this.name;
},
says:function(){
return this.saying||'';
}
}*/
//这个模板
/*var constructonr=function(spec,my){
var that;
my=my||{};
that='一个新对像'; //一个新对像
return that;
}*/
//运用上面的一个模板
var mammal=function(spec){
var that={};
that.get_name=function(){
return spec.name;
};
that.says=function(){
return spec.saying||'2';
}
return that;
};
var myMammal=mammal({name:'Herb222',saying:'我是你爸爸'});
console.log(myMammal.get_name());
var divView = {
ele: '#divTip',
tip: 'hello,underscore!',
onClick: function () {
$(this.ele).html(this.tip);
}
};
/*********js精粹 观察者模式开始*********/
var eventuality=function(that){
var registry={};
that.fire=function(event){
var array,
func,
handler,
i,
type=typeof event==='string'?event:event.type;
if(registry.hasOwnProperty(type)){
array=registry[type];
for(i=0; i<array.length;i+=1)
{
handler=array[i];
func=handler.method;
if(typeof func==='string'){
func=this[func];
}
console.log(func);
console.log(this);
func.apply(this,handler.parameters||[event]);//apply应该是传入一个数组
}
}
return this;
}
that.on=function(type,method,parameters){
var handler={
method:method,
parameters:parameters
}
if(registry.hasOwnProperty(type)){
registry[type].push(handler);
}else{
registry[type]=[handler];
}
return this;
}
return that;
};
var even=new eventuality(myMammal);
console.log(even);
even.on('ddd',function(ele){alert(ele);},['dddas']);//这个应该是一个数组
even.fire('ddd');
var efn=new eventuality(divView);
console.log(efn);
// efn.on('aaab',function(ele){
// console.log(ele);
// },'ddd');
// efn.fire('aaab');
/*********js精粹 观察者模式结束*********/
/*********张鑫旭 观察者模式*************/
var Event =function() {
var that={};
that._listeners={};
that.addEvent= function(type, fn) {
if (typeof this._listeners[type] === "undefined") {
this._listeners[type] = [];
}
if (typeof fn === "function") {
this._listeners[type].push(fn);
}
return this;
};
// 触发
that.fireEvent= function(type) {
var arrayEvent = this._listeners[type];
if (arrayEvent instanceof Array) {
for (var i=0, length=arrayEvent.length; i<length; i+=1) {
if (typeof arrayEvent[i] === "function") {
arrayEvent[i]({ type: type });
}
}
}
return this;
};
// 删除
that.removeEvent= function(type, fn) {
var arrayEvent = this._listeners[type];
if (typeof type === "string" && arrayEvent instanceof Array) {
if (typeof fn === "function") {
// 清除当前type类型事件下对应fn方法
for (var i=0, length=arrayEvent.length; i<length; i+=1){
if (arrayEvent[i] === fn){
this._listeners[type].splice(i, 1);
break;
}
}
} else {
// 如果仅仅参数type, 或参数fn邪魔外道，则所有type类型事件清除
delete this._listeners[type];
}
}
return this;
}
return that;
};
// var evt=new Event();
// console.log(evt);
// evt.addEvent("alert", function() {
// alert("弹出！");
// });
// evt.fireEvent("alert");
/*********张鑫旭 观察者模式结束*************/
</script>
</head>
<body>
</body>
</html>