JavaScript 实现简单前端路由的示例代码

HTML 结构与路由配置

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>js实现路由</title>
</head>
<body>
  < a href=" " >white</ a>
  < a href="#/green" >green</ a>
  < a href="#/blue" >blue</ a>
  < a href="#/yellow" >yellow</ a>
</body>
</html>

<script>

  function Route(){
  }
  Route.prototype.open=function(route,callback){
    var arr={};
    arr[route]=callback;

    window.addEventListener('hashchange',function(){
      var temp=window.location.hash;
      for(var i in arr){
        if(i==temp.slice(1,temp.length)){
          arr[i]();
        }
      }
    })
  }
  window.Route=new Route();


  function change(color){
    var body=document.getElementsByTagName('body')[0];
    body.style.backgroundColor=color;
    console.log(color);
  }
  
  Route.open('/',function(){
    change('');
  });
  Route.open('/green',function(){
    change('green');
  });
  Route.open('/blue',function(){
    change('blue');
  });
  Route.open('/yellow',function(){
    change('yellow');
  });

</script>