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How to directly call the method name of js in php

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How to directly call the js method name in php: 1. Create an html sample file, and ensure that PHP is correctly installed and set up correctly; 2. Create a JavaScript file to store JS functions; 3. On the HTML page Introduce JavaScript files; 4. Use JavaScript's "call_user_func()" method in php to directly call JavaScript functions; 5. Open the html file in the browser and you can see that the js method is successfully called by php.

Operating system for this tutorial: Windows 10 system, php8.1.3 version, Dell G3 computer.

How php directly calls the js method name:

1. Create an HTML sample file, and ensure that PHP has been installed on the server and the related settings are correct

<!DOCTYPE html>
<html>
<head>
<title>My PHP Page</title>
</head>
<body>
<?php
// This is a PHP comment. It will not be displayed in the browser.
?>
</body>
</html>

2 , Create a JavaScript file and set the js function

function myFunction() {
  alert("Hello World!");
}

3. Introduce the JavaScript file into the HTML page

<!DOCTYPE html>
<html>
<head>
<script src="script.js"></script>
</head>
<body>
<?php ?>
</body>
</html>

4. In the PHP code, you can use the following syntax to call the Function:

<?php
    $jsCode = "myFunction();";
    echo &#39;<script>&#39; . $jsCode . &#39;</script>&#39;;
?>

5. When the browser opens the html file, you can see that the js method is successfully called by php, and an alert pop-up window appears.

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