問題：
I need to move caret to end of contenteditable node like on Gmail notes widget.我需要像 Gmail 筆記小部件一樣將插入符號移動到contenteditable節點的末尾。
I read threads on StackOverflow, but those solutions are based on using inputs and they doesn't work with contenteditable elements.我在 StackOverflow 上閱讀了線程，但這些解決方案基於使用輸入，並且它們不適用於contenteditable元素。