Prevent line/paragraph breaks in contentEditable

题意：防止在 contentEditable 中出现换行/段落断开

问题背景：

When using contentEditable in Firefox, is there a way to prevent the user from inserting paragraph or line breaks by pressing enter or shift+enter?

在 Firefox 中使用 contentEditable 时，是否有办法防止用户通过按 Enter 或 Shift+Enter 插入段落或换行符

问题解决：

You can attach an event handler to the keydown or keypress event for the contentEditable field and cancel the event if the keycode identifies itself as enter (or shift+enter).

你可以为 contentEditable 字段绑定一个 keydown 或 keypress 事件处理器，并在键码标识为 Enter（或 Shift+Enter）时取消该事件

This will disable enter/shift+enter completely when focus is in the contentEditable field.

当焦点位于 contentEditable 字段时，这将完全禁用 Enter/Shift+Enter

If using jQuery, something like:

如果使用jQuery，类似这样的代码：

$("#idContentEditable").keypress(function(e){ return e.which != 13; });

...which will return false and cancel the keypress event on enter.

……这将返回 false 并取消按下回车键时的按键事件。