collapsed- Type: boolean
类型：布尔类型(boolean) - If
true, then the element is collapsed and does not appear. It is equivalent to setting the CSS visibility property tocollapse.
如果是真，那么这个元素可以折叠并且隐藏。相当于设置CSS的 visibility 属性为 collapse。
See also
相关参考
collapsedtrue, then the element is collapsed and does not appear. It is equivalent to setting the CSS visibility property to collapse.