Chrome extension modify selected textbox

so I am looking for a way to modify the content of a textbox that I right-click. I know how to do it with Javascrip开发者_如何学Pythont using document.getElementById but what I do not know how to get is the id of the textbox I clicked.

thanks

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You can use document.activeElement to get the active element. For example:

document.activeElement.value = 'Hello!';

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You'll be responding to a click event and taking the target from the event that's passed to your event handler.

Have a read of the quirksmode Introduction to Events.

You might consider using a framework to make dealing with events just a little bit easier.