如何收听剪贴板事件？

Question

How to listen events, when user tries to copy with mouse or with Ctrl + C from browser url (locationbar). It is should work only through javascript. Sorry, but i haven't any ideas to it and i can't show any code. The main idea it is replace value from clipboard.

Answer 1

A very quick Google ...

Note: This will only work within the confines of the DOM. Not the address bar.

document.addEventListener('copy', function(e){
    e.clipboardData.setData('text/plain', 'Hello, world!');
    e.clipboardData.setData('text/html', '<b>Hello, world!</b>');
    e.preventDefault(); // We want our data, not data from any selection, to be written to the clipboard
});

Reference: Here