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# AjaxOnLoad

Specifies a JavaScript function to run when a page loads in the browser.

## Method Signature

```
AjaxOnLoad(functionName)
```

### Arguments

| Argument       | Type     | Required | Description                                                 | Default |
| -------------- | -------- | -------- | ----------------------------------------------------------- | ------- |
| `functionName` | `string` | `true`   | The name of the JavaScript function to execute on page load |         |

## Examples

```boxlang
// Register a JavaScript function to run on page load
AjaxOnLoad("initializeApp");

// Define the JavaScript function somewhere in your page
writeOutput('<script>
function initializeApp() {
    console.log("Page loaded and ready!");
    // Your initialization code here
}
</script>');
```

## Related

* [AjaxLink](/boxlang-framework/modularity/ui-compatibility/reference/built-in-functions/ajaxlink.md)
* [QueryConvertForGrid](/boxlang-framework/modularity/ui-compatibility/reference/built-in-functions/queryconvertforgrid.md)


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