HTMLTableElement.createCaption()
Baseline Widely available
This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.
这个 HTMLTableElement.createCaption() 方法返回这个 table 元素的 caption(HTMLTableCaptionElement). 如果这个 table 没有 caption，这个方法创建并返回 caption.
语法
HTMLTableCaptionElement = table.createCaption()
示例
js
mycap = mytable.createCaption();