react

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detect browser from useragent react

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<!DOCTYPE html>
<html>
<head>
<script src="https://fb.me/react-0.14.3.min.js"></script>
<script src="https://fb.me/react-dom-0.14.3.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/babel-core/5.8.34/browser.min.js"></script>
</head>
<body>
<script type="text/babel">

class App extends React.Component {
constructor() {
super();

this.state = {
data: []
}

this.setStateHandler = this.setStateHandler.bind(this);
};

setStateHandler() {

var msg;

if((navigator.userAgent.indexOf("MSIE") != -1 ) || (!!document.documentMode == true ))
{
msg = "IE";
this.setState({data: msg})
}
else if(navigator.appVersion.indexOf('Edge') > -1)
{
msg = "Edge";
this.setState({data: msg})
}
else if(navigator.userAgent.toLowerCase().indexOf("op") > -1)
{
msg = "Opera";
this.setState({data: msg});
}
else if(navigator.userAgent.indexOf("Chrome") != -1)
{
msg = "Chrome";
this.setState({data: msg})
}
else if(navigator.userAgent.indexOf("Firefox") != -1 )
{
msg = "Firefox";
this.setState({data: msg})
}
else if(navigator.userAgent.indexOf("Safari") != -1)
{
msg = "Safari";
this.setState({data: msg})
}
else
{
msg = "Unknown";
this.setState({data: msg})
}

};

render() {
return (
<div>
<button onClick = {this.setStateHandler}>Click</button>
<h2>{this.state.data}</h2>
</div>
);
}
}

ReactDOM.render(
<App/>,
document.getElementById('my-div')
);

</script>

<div id="globe">
<div id="my-div"></div>
</div>

</body>
</html>