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HTML

              
                <h4>This pen makes a call to a random number fact generator and displays a React component on each click.</h4>

<button id="submitBtn" type="submit">Generate Number Fact</button>


<div id="app"></div>
              
            
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CSS

              
                
              
            
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JS

              
                var numberData = [];
var submitBtn = document.getElementById("submitBtn");

function getNumData(callback) {
	var num = Math.floor(Math.random() * 100);
	var xhr = new XMLHttpRequest();
	xhr.open("GET", "https://cors-everywhere.herokuapp.com/http://numbersapi.com/" + num);
	xhr.send();
	xhr.onload = function() {
		if (xhr.status === 200) {
			numberData.push(xhr.response);
			console.log(numberData[numberData.length - 1]);
			callback();
		}
	};
}

function renderDOM() {
	ReactDOM.render(ce(Container), document.getElementById('app'))
}
submitBtn.addEventListener("click", function() {
	getNumData(renderDOM);
})
const ce = React.createElement;
const NumberFact = function(props) { // props object is second parameter in React.createElement
	return ce('div', {
		className: 'num-fact'
	}, ce('h1', {
		style: {
			color: props.color,
			backgroundColor: props.backgroundColor
		}
	}, props.title))
};
const Container = function() { //MyFirstComponent class
	return ce('div', {
			id: 'container'
		},
		ce(NumberFact, {
			title: numberData[numberData.length - 1],
			color: "#ffffff",
			backgroundColor: "lightblue"
		}))
};
              
            
!
999px

Console