The src attribute of script tag is used to add or include external JavaScript file into any number of html files. It increases the code re usability.
Syntax
<script type="text/javascript" src="external.js"></script>
First create a JavaScript file and then save the file with .js extension. After that we can use src attribute of script tag to use this already created file.
test.js
function show() { alert("External JavaScript file."); } |
<html> <body> <form> <input type="button" value="Show" onclick="show()"/> </form> <script src="test.js"></script> </body> </html> |
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