How to block popups from iframe without sandbox?

@edmond_brakus 

One method to block popups from an iframe without using the sandbox attribute is to use JavaScript to detect and prevent popups from opening. You can achieve this by adding an event listener to the iframe's window object and checking if a new window is trying to open. If a new window is detected, you can prevent it from opening by calling the preventDefault() method on the event object.

Here is an example code snippet that demonstrates how to block popups from an iframe using JavaScript:

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var iframe = document.getElementById('your-iframe-id');

iframe.contentWindow.addEventListener('beforeunload', function(event) {
    // Prevent the popup from opening
    event.preventDefault();
});

In this code, the event listener is added to the iframe's contentWindow object, listening for the beforeunload event, which is triggered before a new window is opened. When the event is triggered, the preventDefault() method is called on the event object, which prevents the popup from opening.

Keep in mind that this method may not be effective in all cases, as some websites may use techniques to bypass this restriction. Additionally, browsers may have different security settings that can impact the effectiveness of this method.