Wednesday, April 29, 2015

JavaScript Introduction

  1. JavaScript is the programming language of HTML and the Web.

JavaScript Can Change HTML Content


One of many HTML methods is getElementById().
This example uses the method to "find" an HTML element (with id="demo"), and changes the element content (innerHTML) to "JavaScript"

<!DOCTYPE html>
<html>
<body>
<h1> JavaScript change the content</h1>
<p id="demo">JavaScript can change the HTML content.</p>
<button type="button"
onclick="document.getElementById('demo').innerHTML = 'JavaScript!'">
Click Me!</button>
</body>
</html>

Result :

1. before click 

JavaScript change the content

JavaScript can change HTML content.


2. After click 

JavaScript change the content

JavaScript!




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