Unable to view output in React Js? - reactjs

Question

I am using reactJS to create a group of buttons.
However, I am unable to view the output (nothing comes on screen).
I have properly created a react class and rendered the HTML using babel. Here is the code. Please find where am I going wrong at this, why nothing gets printed on the screen.
I have imported the CDN of the required files.
react-min.js
react-dom.min.js
browser.min.js
babel.js
``
Main
<script src = "https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
<script src = "//maxcdn.bootstrapcdn.com/bootstrap/3.3.1/js/bootstrap.min.js"></script>
<link href = "//maxcdn.bootstrapcdn.com/bootstrap/3.3.1/css/bootstrap.min.css" rel = "stylesheet" />
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap-theme.min.css" />
<script src="browser.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/babel-standalone/6.24.0/babel.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/react/15.1.0/react.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/react/15.1.0/react-dom.min.js"></script>
<style>
#side{
position: fixed;
width:10%;
height:100%;
background-color: black;
border:2px solid black;
color:white;
z-index: -1;
}
#buttons{
position: fixed;
top:10%;
left:2%;
color:white;
}
</style>
<div id="side"></div>
<div id="buttons"></div>
<script type = "text/babel">
var side = React.createClass({
render:function(){
return
(
<div>
<div id="Profile">
<button class="btn btn-danger">Profile</button>
</div>
<div id="Maps">
<button class="btn btn-primary">Maps</button>
</div>
<div id="video">
<button class="btn btn-danger">Video</button>
</div>
</div>
);
}
});
ReactDOM.render(
<side />,
document.getElementById('buttons'));
</script>

Answer 1

React Component names should start with a capital letter.
Change
var side = React.createClass({
...
});
ReactDOM.render(
<side />,
document.getElementById('buttons')
);
To
var Side = React.createClass({
...
});
ReactDOM.render(
<Side />,
document.getElementById('buttons')
);
Refer official docs - components must be capitalized for more info.
Adding executable code for clarity
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
<script src="//maxcdn.bootstrapcdn.com/bootstrap/3.3.1/js/bootstrap.min.js"></script>
<link href="//maxcdn.bootstrapcdn.com/bootstrap/3.3.1/css/bootstrap.min.css" rel="stylesheet" />
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap-theme.min.css" />
<script src="browser.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/babel-standalone/6.24.0/babel.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/react/15.1.0/react.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/react/15.1.0/react-dom.min.js"></script>
<style>
#side {
position: fixed;
width: 10%;
height: 100%;
background-color: black;
border: 2px solid black;
color: white;
z-index: -1;
}
#buttons {
position: fixed;
top: 10%;
left: 2%;
color: white;
}
</style>
<div id="side"></div>
<div id="buttons"></div>
<script type="text/babel">
var Side = React.createClass({ render:function(){ return (
<div>
<div>Hello World</div>
<div id="Profile">
<button class="btn btn-danger">Profile</button>
</div>
<div id="Maps">
<button class="btn btn-primary">Maps</button>
</div>
<div id="video">
<button class="btn btn-danger">Video</button>
</div>
</div>
); } }); ReactDOM.render(
<Side />, document.getElementById('buttons'));
</script>