路由的基本实现——hash路由

问题提出vue、react在路由的实现上，都有基于hash的路由。那么如何使用原生来实现呢？比如类似下面这样的路由：hashchange事件是实现路由的核心hash实现路由的时候，最本质的原理就是hash值的变化，会引发一个hashchange事件，可以根据这个hash值的变化，加载不同的DOM。html:<div class="box flex-box"&amp

mapbar_front

6601人浏览 · 2018-05-29 12:12:25

mapbar_front · 2018-05-29 12:12:25 发布

问题提出

vue、react在路由的实现上，都有基于hash的路由。那么如何使用原生来实现呢？

比如类似下面这样的路由：
这里写图片描述

hashchange事件是实现路由的核心

hash实现路由的时候，最本质的原理就是hash值的变化，会引发一个hashchange事件，可以根据这个hash值的变化，加载不同的DOM。

html:

<div class="box flex-box">
    <span class="flex1 center route">home</span>
    <span class="flex1 center route">shop</span>
    <span class="flex1 center route">shopcar</span>
    <span class="flex1 center route">usercenter</span>
</div>
<div id="root"></div>

js:

//路由配置
const routes = [{
 path:'/0',
    template:'<div>00000000</div>'
},{
    path:'/1',
    template:'<div>11111111</div>'
},{
    path:'/2',
    template:'<div>22222222</div>'
},{
    path:'/3',
    template:'<div>33333333</div>'
}]
//基本实现
var mount = document.getElementById('root');
var list = document.getElementsByClassName('route');
for(var i = 0; i < list.length; i++){
    list[i].onclick = (function(i){
        return function(){
            //console.log(window.location,i);
            window.location.hash=`/${i}`;
        }
    })(i)
}
window.addEventListener('hashchange',function(e){
     console.log(e.newURL.split('#')[1]);
     var path = e.newURL.split('#')[1];
     var item = routes.find(function(item){
         return item.path == path;
     });
     mount.innerHTML = item.template;

 })

完整示例

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=0">
    <style>
        .flex-box{
            display: flex;
        }
        .flex1{
            flex: 1;
        }
        .center{
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .box{
            height: 100px;
        }
        .route{
            border: 1px solid #ccc;
            box-sizing: border-box;
        }
    </style>
</head>
<body>
    <div class="box flex-box">
        <span class="flex1 center route">home</span>
        <span class="flex1 center route">shop</span>
        <span class="flex1 center route">shopcar</span>
        <span class="flex1 center route">usercenter</span>
    </div>
    <div id="root"></div>

</body>
<script>
    const routes = [{
        path:'/0',
        template:'<div>00000000</div>'
    },{
        path:'/1',
        template:'<div>11111111</div>'
    },{
        path:'/2',
        template:'<div>22222222</div>'
    },{
        path:'/3',
        template:'<div>33333333</div>'
    }]
</script>
<script>
    var mount = document.getElementById('root');
    var list = document.getElementsByClassName('route');
    for(var i = 0; i < list.length; i++){
        list[i].onclick = (function(i){
            return function(){
                //console.log(window.location,i);
                window.location.hash=`/${i}`;
            }
        })(i)
    }
    window.addEventListener('hashchange',function(e){
        console.log(e.newURL.split('#')[1]);
        var path = e.newURL.split('#')[1];
        var item = routes.find(function(item){
            return item.path == path;
        });
        mount.innerHTML = item.template;

    })
</script>
</html>

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