What are some best practices for combining PHP and JavaScript to achieve dynamic webpage functionality?

Issue: When combining PHP and JavaScript for dynamic webpage functionality, it's important to properly handle the communication between the server-side PHP code and client-side JavaScript code. One common approach is to use AJAX to make asynchronous requests to the server and update the webpage without reloading it. PHP Code Snippet: 

<?php
// PHP code to handle AJAX request
if(isset($_POST['data'])) {
    $data = $_POST['data'];
    
    // Perform some processing with the data
    
    echo json_encode($result);
    exit;
}
?>
```

JavaScript Code Snippet:
```javascript
// JavaScript code to make AJAX request
var data = {key: 'value'};

$.ajax({
    type: 'POST',
    url: 'process_data.php',
    data: {data: data},
    success: function(response) {
        // Handle the response from the server
        console.log(response);
    }
});

Keywords

PHP JavaScript dynamic webpage functionality integration

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