In JavaScript, if you want to print the string “null” when a variable is null, you can do so add in !== operator.

Benefits of Using if-else Statements:

1. Clarity: The code is easy to read and understand. It clearly communicates the intention: if the public key is present, display it; otherwise, display a default message.
2. Error Avoidance: Handling null values prevents unexpected errors that might occur when trying to use null data.
3. User-Friendly: Displaying a meaningful message like “No key available” instead of a blank space or undefined value enhances the user experience.
4. Maintainability: The code can be easily maintained and updated, even by developers who didn’t originally write it, thanks to its readability.

Example:-

if (html.data.pubkey !== null) {
    $('#key_name').html(html.data.pubkey);
} else {
    $('#key_name').html('NULL');
}

2nd step go to blade page and use ID where you want to show the data

<span id="key_name"></span>

Output :-