01_workshop_select and append

<!DOCTYPE html>

<head>
	<title>d3js workshop - data binding</title>
	<script src="https://d3js.org/d3.v3.js"></script> 
</head>

<body>

<div id="selectMe" class="selectMe">
		Select me if you can!
	</div>
  <br>
	<div id="doNotSelectMe" class="doNotSelectMe">
		Keep distance! Thanks.
	</div>

// 		you can select items with d3 based on element type, id,
//    class, or combination of them here are some examples

// 		this will select all divs and update the text
// 		d3.selectAll('div').text("You are selected!");
		
// 		this will select only divs with class selectMe
// 		d3.selectAll('div.selectMe').text("You are selected!") ;
		
// 		or any element that is classed as selectMe 
// 		d3.selectAll('.selectMe').text("You are selected!");
		
// 		this will select only divs with id selectMe
// 		d3.selectAll('div#selectMe').text("You are selected!");

// 		and you can append items to your selection
// 		let's select body and append a new div
// 		check the order of elements in HTML page
// 		and also I'm using select this time!

// 		d3.select('body')
// 			.append('div')
// 			.text("I'm the new div added by d3! Yo!");

</script>
</body>

Modified http://d3js.org/d3.v3.js to a secure url

https://d3js.org/d3.v3.js