JavaScript cross-domain refresh implementation code_javascript skills

Three pages are in the same window, namely main.htm, left.htm and right.htm.
main.htm

Copy code The code is as follows:

>





left.htm

Copy code The code is as follows:

I am on the left

right.htm

Copy code The code is as follows:

See inside right.htm
function onclickRefresh() is implemented through parent.frames["left"].location.refresh(); The right page refreshes the left page.

If you add

to the main page, copy the code and the code is as follows:

You can access it through the home page Refresh the subpage.
Although this can be super simple to achieve the purpose, in actual projects, the data will not be so simple. The most common is the left and right trees. The creation and loading of the directory tree (such as creating a thousand nodes) is inherently more resource intensive. . If we still use the method to refresh the left and right pages, the efficiency is obviously low, then is it possible to achieve cross-domain refresh or submission through other methods?