// 0.0.2/es5.simple.factory.js
function Role(options){
this.role = options.role;
this.permissions = options.permissions;
}
Role.prototype.show = function (){
var str = '是一個(gè)' + this.role + ', 權(quán)限：' + this.permissions.join(', ');
console.log(str)
}
function simpleFactory(role){
switch(role) {
case 'admin':
return new Role({
role: '管理員',
permissions: ['設(shè)置', '刪除', '新增', '創(chuàng)建', '開發(fā)', '推送', '提問', '評(píng)論']
});
break;
case 'developer':
return new Role({
role: '開發(fā)者',
permissions: ['開發(fā)', '推送', '提問', '評(píng)論']
});
break;
default:
throw new Error('參數(shù)只能為 admin 或 developer');
}
}
// 實(shí)例
const xm = simpleFactory('admin');
xm.show();
const xh = simpleFactory('developer');
xh.show();
const xl = simpleFactory('guest');
xl.show();

// 0.0.2/simple.factory.js
class SimpleFactory {
constructor(opt) {
this.role = opt.role;
this.permissions = opt.permissions;
}
// 靜態(tài)方法
static create(role) {
switch (role) {
case 'admin':
return new SimpleFactory({
role: '管理員',
permissions: ['設(shè)置', '刪除', '新增', '創(chuàng)建', '開發(fā)', '推送', '提問', '評(píng)論']
});
break;
case 'developer':
return new SimpleFactory({
role: '開發(fā)者',
permissions: ['開發(fā)', '推送', '提問', '評(píng)論']
});
break;
default:
throw new Error('參數(shù)只能為 admin 或 developer');
}
}
show() {
const str = `是一個(gè)${this.role}, 權(quán)限：${this.permissions.join(', ')}`;
console.log(str);
}
}
// 實(shí)例
const xm = SampleFactory.create('admin');
xm.show();
const xh = SampleFactory.create('developer');
xh.show();
const xl = SampleFactory.create('guest');
xl.show();

// 0.0.2/es5.function.factory.js
function FunctionFactory(role) {
if(!(['admin', 'developer'].indexOf(role) > -1)){
throw new Error('參數(shù)只能為 admin 或 developer');
}
// 安全的工廠方法
if (this instanceof FunctionFactory) {
return this[role]();
}
return new FunctionFactory(role);
}
FunctionFactory.prototype.show = function () {
var str = '是一個(gè)' + this.role + ', 權(quán)限：' + this.permissions.join(', ');
console.log(str)
}
FunctionFactory.prototype.admin = function (permissions) {
this.role = '管理員';
this.permissions = ['設(shè)置', '刪除', '新增', '創(chuàng)建', '開發(fā)', '推送', '提問', '評(píng)論'];
}
FunctionFactory.prototype.developer = function (permissions) {
this.role = '開發(fā)者';
this.permissions = ['開發(fā)', '推送', '提問', '評(píng)論'];
}
var xm = FunctionFactory('admin');
xm.show();
var xh = FunctionFactory('developer');
xh.show();
var xl = FunctionFactory('guest');
xl.show();

// 0.0.2/jquery.factory.js
// 工廠模式
class jQuery {
constructor(selector) {
let slice = Array.prototype.slice;
let dom = slice.call(document.querySelectorAll(selector));
let len = dom ? dom.length : 0;
for (let i = 0; i < len; i++) {
this[i] = dom[i];
}
this.length = len
this.selector = selector || ''
}
addClass(name) {
console.log(name)
}
html(data) {
}
// 省略多個(gè) API
}
// 工廠模式
window.$ = function(selector) {
return new jQuery(selector);
}
// 實(shí)例
const $li = $('li')
$li.addClass('item');