reactjs - React modify state with extern component -


i'm beginner react , got problem, want update state component 1 component . there html : 

    <div id="leftmenu"></div>     <div id="systeme"></div>

i hide component in leftmenu component :

var leftmenu = react.createclass({  getinitialstate: function() {  return {modif: false};  },  render: function() { return(   <div classname="col s2">     <ul id="slide-out" classname="side-nav fixed">        <li><a classname={this.state.modif ? 'validate' : ' validate hidden'}><i classname="material-icons right">done</i>confirmer et reboot</a></li>       <li><a classname={this.state.modif ? 'cancel' : 'cancel hidden'}><i classname="material-icons right">stop</i>tout annuler</a></li>     </ul>    </div> ) } });

i want modify modif state when systeme component fire action, possible ?

thank's ;)


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