title: How to listener the keyboard type text in Javascript?
body: <p>I want to get the keyboard typed text, not the key code. For example, I press <kbd>shift</kbd>+<kbd>f</kbd>, I get the &quot;F&quot;, instead of listen to two key codes. Another example, I click <kbd>F3</kbd>, I input nothing. How can I know that in js?</p>