can you give me an example code of calling java script function in php variabl

can you give me an example code of calling java script
function in php variable using AJAX.or with out ajax??????

Question Posted / usman

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can you give me an example code of calling java script function in php variable using AJAX.or with..

Answer / Abhinav Asgola

To call a JavaScript function from PHP using AJAX, you can use the jQuery library. Here's an example:

1. Create a JavaScript file (example.js) containing your function:

```javascript
function getSum(a, b) {
return a + b;
}
```

2. Include the jQuery library and call the JavaScript function from PHP using AJAX:

```php
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js"></script>
<script>
$(document).ready(function(){
$.ajax({
url : '<?php echo $_SERVER['PHP_SELF']; ?>',
type : 'post',
dataType : 'json',
data : {a: 5, b: 3},
success : function(data) {
console.log('Sum of numbers is: ', data.sum);
}
});
});
</script>
```

In PHP, create a script (example.php) to handle the AJAX request and return the result:

```php
<?php
$a = $_POST['a'];
$b = $_POST['b'];
$sum = $a + $b;
echo json_encode(array('sum' => $sum));
?>

Without using AJAX, you can use the PHP eval() function to call JavaScript code. However, be cautious with this approach as it may expose security risks:

```php
<?php
$jsCode = "var a = 5; var b = 3; var sum = a + b; echo 'Sum of numbers is: ', sum;";
eval($jsCode);
?>
```

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