An external JavaScript file, no need to write <SCRIPT> tag, myScript.js code is as follows:
Two, index.php code below
Third, the operating results are as follows
Fourth, after clicking
myScript.php follows
function myFunction () { document.getElementById ( "Demo") the innerHTML = "paragraphs have been changed.." ; }
index.php as follows
<!DOCTYPE html> <html> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <body> <h2>外部 JavaScript</h2> <p id="demo">一个段落。</p> <button type="button" onclick="myFunction()">试一试</button> <script src="myScript.js"></script> </body> </html>