How to implement Bootstrap unordered list?

Bootstrap unordered lists do not use new tags, but use CSS classes to beautify the original

and <li> tags. The main steps include: Use the .list-unstyled class to remove the default list style. Use the .list-inline class to arrange list items into a row. Control list layout in conjunction with the grid system. Customize styles with caution and prioritize the use of classes provided by Bootstrap.

Bootstrap unordered list? This question is awesome! To put it bluntly, Bootstrap has not invented any new HTML tags. It just uses CSS to beautify <ul></ul> and <li> tags you are already familiar with. Therefore, the core of implementing the unordered list of Bootstrap style is to cleverly use the CSS classes provided by Bootstrap.

You may think this is very simple, isn’t it just adding a class? But there are actually many details here, which can make the code you write more elegantly, more in line with the style of Bootstrap, and more importantly, it is easier to maintain and expand.

Let’s review the basics first. The <ul></ul> tag in HTML defines an unordered list, and the <li> tag defines a list item. Bootstrap uses a series of classes to control the style of the list. For example .list-unstyled can directly remove the default list style, including bullets. This is very useful for lists that require custom styles.

Let's take a look at a simple example:

 <code class="html"><ul class="list-unstyled"> <li>这是第一个列表项</li> <li>这是第二个列表项</li> <li>这是第三个列表项</li> </ul></code>

After this code is run, you will see a list without bullets. Isn't it very simple? But don't worry, this is just an introduction.

Bootstrap also provides other classes, such as .list-inline , which can line up list items. This is useful when creating horizontal navigation menus or labels.

 <code class="html"><ul class="list-inline"> <li class="list-inline-item">选项一</li> <li class="list-inline-item">选项二</li> <li class="list-inline-item">选项三</li> </ul></code>

Pay attention to .list-inline-item class here, which makes additional style adjustments to list items to make them more suitable for horizontal arrangement. Ignore this class, the effect of list-inline may not be what you want.

To go deeper, you can combine Bootstrap's grid system to control the layout of the list. Imagine that you want to display a list in a column, and this list needs a responsive layout. At this time, you can place <ul></ul> in a grid column and use the responsive characteristics of Bootstrap to control the display effect of the list under different screen sizes. This requires you to have some understanding of Bootstrap's grid system.

Of course, you can also completely customize the style of the list by overwriting the default style of Bootstrap. But I don't recommend you to do this unless you really know what you are doing. Because this will increase the complexity of the code, and your custom style may be invalid when upgrading Bootstrap in the future. Unless necessary, try to use the classes provided by Bootstrap to control styles, which is the best practice.

Finally, remember that Bootstrap is just a tool that can help you quickly build pages, but the truly exquisite design and code depends on your in-depth understanding of HTML, CSS and Bootstrap. Don’t be superstitious about tools, you must understand the principles behind them. This way you can write more elegant, robust and easier to maintain code.

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