How to Do layout

How does the layout work? I want to do this exercise. there is a navigation bar on the web page. the navigation bar is divided into two parts. click the entries in the navigation bar and I will update the display content on the left, click the entry on the left to update the content on the right. On the left side, I want to use a div. click each entry in the navigation bar and update the corresponding content on the left side. in this way, there are not many divs on the left. how do you do the layout?
I want to do this exercise. there is a navigation bar on the web page. the navigation bar is divided into two parts. click the entries in the navigation bar and I will update the display content on the left, click the entry on the left to update the content on the right.
On the left side, I want to use a div. click each entry in the navigation bar and update the corresponding content on the left side. in this way, there are not many divs on the left. how do you do this?
How can it be better?


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A lot of divs are just a lot of divs. they need to be displayed and hidden.
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1. many DIV
2. Ajax
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For div + ajax
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Ajax is a technology that uses Javascript scripts to implement interaction. For your ideas, refer to the QQ space. The csdn Forum can be implemented using iframe + js, or ajax. Ajax is recommended. The premise is that javascript should be written first, and you will understand it later.
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If you want to display a part of static content, simply use div, you need to call up the data first, and then process the content to be displayed, and control css to hide it. Then, modify css in js to display this part.

If the content needs to be updated in real time, the best way is to handle js classes such as ajax or jquery. get.

Of course, there is also the most stupid way, that is, using dom
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Framework technology
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For better solutions, use iframe: define right as iframe, and each navigation column corresponds to a left page;
If there is not much left content, you can use ajax callback to display it.