This about using JS(a little CSS) to make change text dynamically, look the main page of https://www.microsoft.com/net to see more， because these pull away and spin off the module of view-source:www.microsoft.com/net. Thanks again for some CSS from normalize.css and some js from Microsoft.
Free. Cross-platform. Open source. A developer platform for building all your apps.
From main page of .NET. 😏
<!DOCTYPE html>
<html class="js">
<head>
<title>Free. Cross-platform. Open source. A developer platform for building all your apps.</title>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<link rel="stylesheet" href="bootstrap-custom.min.css"/>
<script src="jquery-3.3.1.min.js"></script>
<script src="textchanging.es6"></script>
</head>
<body class="home" style="position: relative; overflow-y: auto;">
<header>
<div class="jumbotron x-hidden-focus">
<div class="container text-center">
<h1>Free. Cross-platform. Open source. A developer platform for building <span class="tagline typing">all your</span> apps.</h1>
</div>
</div>
</header>
<script>
var jumbotron = new Jumbotron();
jumbotron.start("web", "mobile", "desktop", "gaming", "IoT", "all your");
</script>
</body>
</html>Coding like these helping Dynamically-Text-Changing to work. You should add
<!-- in <body> or <header> tag -->
<div class="jumbotron x-hidden-focus">
<div class="container text-center">
<h1>$1 <span class="tagline typing">$2</span> $3</h1>
</div>
</div>to <body>($1, $2 and $3 are your own text which is showed first) and add
//in <script> tag
var jumbotron = new Jumbotron();
jumbotron.start("$4.1", "$4.2", "$4.3", $······);to <script>($4.1, $4.1, $4.2, $4.3" are you own text which changing when it's time to change text dynamically; $······ represent you can write more there (like $4.4 , $4.5) to transfer more arguments to start method) in your HTML file.
The class ask you to use ECMAScript6.
//textchanging.es6
class Jumbotron{
constructor(container = $(".tagline")) {}
start(...taglines){}
}