Confirm Dialog when i close the browser?

Question

i need to display confirm dialog box before close browser window using javascript or PHP. the confirm box should come when i click the close button of browser. other wise do

Answer 1

You should handle the onbeforeunload event...

function closeEditorWarning(){
    return 'Are you sure?'
}
window.onbeforeunload = closeEditorWarning;

Or use jquery, window.attachEvent / window.addEventListener to do it nicely