| To manually test this, copy any text and try to paste into the input field. The value of the input should not change. | |
| initial value: | |
| | <shadow:root> | |
| | <div> | |
| | contenteditable="plaintext-only" | |
| | "helloworld" | |
| after the cut: | |
| | <shadow:root> | |
| | <div> | |
| | contenteditable="plaintext-only" | |
| | <br> | |
| after prevented paste: | |
| | <shadow:root> | |
| | <div> | |
| | contenteditable="plaintext-only" | |
| | <br> | |
| after allowed paste: | |
| | <shadow:root> | |
| | <div> | |
| | contenteditable="plaintext-only" | |
| | "helloworld" | |
| | <br> |