Check if the clipboard has contents.
Recommended to use over getContents() for privacy reasons, if you only want to check if there's something on the clipboard.
For instance, calling getContents() on iOS shows a privacy notification since iOS 14, while hasContents() does not.
true, if the clipboard has contents
gets the current content of the clipboard if it contains text
for WebGL app, getting the system clipboard is currently not supported. It works only inside the app
the clipboard content or null
void setContents(java.lang.String content)
Sets the content of the system clipboard.
for WebGL app, clipboard content might not be set if user denied permission, setting clipboard is not synchronous
so you can't rely on getting same content just after setting it