<div><a r-link="#/home">首页</a></div>
<div><a r-link="#/button">按钮组件</a></div>
<div><a r-link="#/form">表单组件</a></div>

<div id="app"></div>

    class Router{
            constructor(){
                //缓存route数据信息
                this.routes = {};
                this.ready();
            }

            static isDOM(el){
                el = Array.from(el);
                if(el.length == 0){return false;}
                for(let i = 0,len=el.length; i<len; i++){
                    if(el[i].nodeType != (Node.ELEMENT_NODE||Node.DOCUMENT_NODE)){
                        return false;
                    }
                }
                return true;
            }

            static getEl(selector){
                if(selector.nodeType != (Node.ELEMENT_NODE||Node.DOCUMENT_NODE)){
                    if(/^#[^#\s\b]+$/.test(selector)){
                        selector = document.querySelector(selector)
                    }else{
                        selector = document.querySelectorAll(selector)
                    }
                }
                return selector;
            }

            static evtListener(el,event,handle){
                el = Router.isDOM(el) ? [...el] : [el];
                el.forEach(el=>el.addEventListener(event,handle));
            }

            static removeListener(el,event,handle){
                el = Router.isDOM(el) ? [...el] : [el];
                el.forEach(el=>el.removeEventListener(event,handle));
            }

            static xhr(options){
                
            }

            static isHash(val){
                return /^#[^\s\b]+$/.test(val)
            }

            static setTitle(htmlString){
                let result = /<title>([\w\W]*)<\/title>/.exec(htmlString) 
                ,title = result ? result[1] : htmlString;
                //,matches = document.querySelectorAll(‘title‘)[0].textContent.match(/^{{([^{}]+)}}$/);
                document.querySelectorAll(‘title‘)[0].textContent = title
            }

            //收集routes
            route(path,callback){
                this.routes[path] = callback ? callback : function(){};
            }

            //跳转至指定path
            go(path){
                location.hash != path && (location.hash = path)
            }

            init(firstPath){
                location.hash && (firstPath = location.hash)
                //加载默认的内容页
                Router.isHash(firstPath) && (location.hash = firstPath) && this.routes[firstPath] && this.routes[firstPath].call(this)
            }
            
            //监听hashchange
            listenerHashchange(){
                Router.evtListener(window,‘hashchange‘,()=>{
                    let path = location.hash;
                    this.routes[path] && this.routes[path].call(this)
                });
            }

            //初始化
            ready(){
                this.listenerHashchange();
            }
        }

    const router = new Router()
    //1、注册routes依赖
    router.route("#/home",function(){
        Router.setTitle("首页")
        document.getElementById(‘content‘).innerHTML = ‘欢迎来到首页‘
    })
    router.route("#/button",function(){
        $.ajax({
            type:‘get‘
            ,url:‘../component/button.html‘
        }).then(function(html){
            Router.setTitle(html)
            document.getElementById(‘content‘).innerHTML = html;
        })
    })
    router.route("#/form",function(){
        $.ajax({
            type:‘get‘
            ,url:‘../component/element.html‘
        }).then(function(html){
            Router.setTitle(html)
            document.getElementById(‘content‘).innerHTML = html;
        })
    })
    //2、初始化默认页
    router.init(‘#/home‘)
    //3、点击事件
    Router.evtListener(document.querySelectorAll(‘[r-link]‘),‘click‘,function (e) {
        router.go(this.getAttribute(‘r-link‘))
    })