javascript - How to use eventlisteners and functions from outside react components? -


i have loaded library (cordova) in main index.html file. added eventlistener 'deviceready' on document. how can call function , related library inside react component?

html file: 

<!doctype html> <html>   <head>       <title>title</title>   </head>   <body>     <div id="app"></div>   </body>  <script type="text/javascript" src="cordova.js"></script> <script>   document.addeventlistener('deviceready', ondeviceready);    // function want call inside component.   // function ondeviceready() {   //   var rect = { x: 0, y: 0, width: window.innerwidth, height: window.innerheight };   //   cordova.plugins.camerapreview.startcamera(rect, 'back', true, true, true)   //   cordova.plugins.camerapreview.show();   // } </script>  </html>

my react component: 

import react, { component } 'react';  class example extends component {     // here want call cordova actions inside eventlistener     render() {      return (        <div>          <p>example</p>        </div>      );    } }  export default example;

by using reacjs lifesycle proper way add , remove events

so can this:

import react, { component } 'react';  class example extends component {    componentdidmount() {     document.addeventlistener('deviceready', this.deviceready);   }    componentwillunmount() {     document.removeeventlistener('deviceready', this.deviceready);   }    deviceready () {     // stuff   }     render() {      return (        <div>          <p>example</p>        </div>      );    } }  export default example;

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