共同点：

这两种事件都代表的是页面文档加载时触发。

异同点：

ready 事件的触发，表示文档结构已经加载完成
（不包含图片等非文字媒体文件）。

onload 事件的触发，表示页面包含图片等文件在内的所有元素都加载完成。

Thing in common:

Both of these events are triggered when the page document is loaded.

Similarities and differences:

The trigger of the ready event indicates that the document structure has been loaded
(non - text media such as pictures are not included).

The trigger of the onload event means that all elements of the page, including files such as pictures, have been loaded.