reactjs - react router nested components issue -


i have following code - 

class app extends component {     render() {         return (             <router>                 <switch>                         <mainpage>                             <route exact path="user" component={error}/>                         </mainpage>                 </switch>             </router>         )     } }

right mainpage rendered every url , understand why, lets want render pages. how can wrap in order done?

let's want show mainpage /user , /member, while /anonymous shown without mainpage:

class app extends component {     render() {         return (             <router>                 <switch>                   <route path="/anonymous" component={anonymous} />                   <route path="/" component={mainpage} />                 </switch>             </router>         )     } }  class mainpage extends component {   render() {     return (       <div>         .... // place original code print `mainpage` here          <route path="/user" component={user}/>         <route path="/member" component={member}/>       </div>     )   } }

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