I want to make a drop-down box link, and then let many web pages reference this drop-down box, so that after the drop-down box changes, the references to it will change accordingly. _html/css_WEB-ITnose

I want to make a drop-down box link, and then let many web pages reference this drop-down box, so that after the drop-down box changes, the references to it will change accordingly.

I want to make this drop-down box a separate web page, and other web pages are implemented using the embedded frame , but the disadvantage of this is that if the drop-down box continues If it becomes longer, the following will not be displayed. Is there any good way to implement it?

The code of the drop-down box is as follows:



Baidu

Sina

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Can’t hear clearly. Can you implement ajax? Copy the code

That means I have many static pages, and these static web pages all have the same drop-down box. As long as the content of the drop-down box is changed in one place, all places with the same drop-down box will be updated.

I don’t understand ajax.

If the drop-down box is very long, a scroll bar will appear. How come it disappears?

Pagination Classification Search by conditions. . . . .
There are too many ways

If the drop-down box is very long, a scroll bar will appear. How come it disappears?
I want many pages to reference a drop-down box. As long as I change it in one place, other places that reference it will automatically change.
I want to make this text box into a separate web page, and then use the embedded frame in other places.
In this way, the drop-down box can only be placed in

There is no way to do this with purely static pages