How to hide table columns using CSS

With the development of web design, tables, as one of the earliest page layout methods, are familiar to us to a certain extent and are widely used in web design. As an HTML markup language with rich typesetting functions, tables are frequently used in web design and are often used to display complex data information and charts. However, in some cases, we may not want to display all the information in the table, but only part of it. In this case, CSS provides a very simple and effective way to hide certain columns in the table. Today we will learn how to hide table columns using CSS.

1. The display attribute in CSS style sheet

We know that there is an attribute in CSS called display, which can set the display state of an element. For example, for text, the display attribute can be passed Set to "none" value to hide it. So, for hiding table columns, we can use the display attribute to hide table columns.

2. Implementation method of hide column

Next, we use a simple html table to demonstrate. At the same time, we only need to add a style in CSS to realize the function of hiding columns.

First, we define a simple html table and set styles for it.

nbsp;html>


    <meta>
    <title>How to hide table columns using CSS</title>
    <style>
        table{
            border: 1px solid black;
            border-collapse: collapse;
        }
        th, td{
            border: 1px solid black;
            padding: 5px;
        }
    </style>


    

                                                                                                                                                                                                                                                                                                                                                                                                                                

姓名	性别	年龄	居住地址
张三	男	25	北京市
李四	女	30	上海市
王五	男	28	广州市

In the style setting, we set a basic table style, including the outer border of the table, cell gaps, etc. Therefore, our table looks like this:

Suppose we want to hide the second column "Gender" of the table, then we only need to use the display attribute.

table td:nth-child(2),
table th:nth-child(2){
    display: none;
}

Using the above CSS statement, you can achieve the effect of hiding the "gender" in the second column of the table. That is to say, through the CSS selector: nth-child(n) attribute, we can get the td or th element corresponding to a specific number of columns in the table, and through the display:none value of the style, the elements of this column can be hidden.

Here, we explain the meaning of the CSS statement:

table td:nth-child(2),  // 选中表格第二列td
table th:nth-child(2){  // 选中表格第二列th
    display: none;   // 隐藏所选择的td、th
}

We can see that using the display attribute is very simple. You only need to add the above line of code to the original CSS style to achieve hiding. Table column functions. Now, let's look at the specific effects.

As can be seen from the picture, the second column "Gender" has been successfully hidden.

3. The difference between hide columns and truncated columns

In CSS, we have another attribute called truncated, which can also be used to hide columns in tables. The difference from hide is that hide just hides the element, while truncated stretches the element to 0 pixel width to achieve the effect of being completely hidden and not taking up space.

The code of truncated is as follows:

table td:nth-child(2),
table th:nth-child(2){
    width: 0;
    padding: 0;
    border: none;
    white-space: nowrap;
}

In truncated, we not only set the width of the element to 0, but also set the padding and border to 0. Also, use white-space:nowrap to move the content slightly to the left and prevent them from being wrapped. In this way, we have successfully hidden the second row of the table, "Gender".

4. Application scenarios of hide and truncated methods

Next, let’s briefly summarize the application scenarios of hide and truncated methods.

As for the hide method, it is more suitable for scenes that require switching between display and hiding, such as submenus in the menu bar. In addition, hide is also suitable for hiding certain abnormal data in tables to ensure the beauty and applicability of the page.

The truncated method is more suitable for scenarios where certain data in the table need to be hidden while retaining the layout and hierarchy of the table. For example, in the blog's comment list, we can hide the user's Sensitive information is hidden, and its identity information is still stretched to 0, which does not occupy layout space.

To sum up, the difference between the hide method and the truncated method depends on the design requirements and the nature of the table that needs to hide the data. When we use it, we should make a choice based on the actual situation.

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