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Use the :nth-of-type(2) pseudo-class selector to select the style of the second element of the same type

WBOYOriginal: 2023-11-20 12:56:15807browse

Title: Use the :nth-of-type(2) pseudo-class selector to select the style of the second element of the same type

In web development, We often need to add styles to specific elements. Sometimes we need to select a specific element among the same type of elements to add styles, rather than all the same type of elements. In this case, you can use the pseudo-class selector in CSS: nth-of-type(2) to select the second element of the same type and add a style effect to it.

Pseudo-class selector is a special CSS selector used to select elements that meet specific conditions. Among them, the :nth-of-type(2) pseudo-class selector means selecting the second element among elements of the same type. Its usage is as follows:

/* 选择同类型元素中的第二个元素 */
选择器:nth-of-type(2) {
    属性: 值;
}

The following is a specific code example to demonstrate how to use the :nth-of-type(2) pseudo-class selector to select the second element of the same type of element:

<!DOCTYPE html>
<html>
<head>
    <style>
    /* 选择同类型元素中的第二个元素 */
    ul li:nth-of-type(2) {
        background-color: yellow;
    }
    </style>
</head>
<body>
    <ul>
        <li>第一个元素</li>
        <li>第二个元素</li> <!-- 这里将被选中，因为是同类型元素中的第二个元素 -->
        <li>第三个元素</li>
    </ul>
    <ul>
        <li>第一个元素</li>
        <li>第二个元素</li> <!-- 这里不会被选中，因为是同类型元素中的第一个元素 -->
    </ul>
</body>
</html>

In the above code example, we selected the second li element in the same type element ul through the ul li:nth-of-type(2) selector, and set its background color to yellow. This way, the second element of the same type will have a different style than the other elements.

It is worth noting that :nth-of-type(2) is a new attribute of CSS3, so it needs to be compatible with different browsers when used. Compatibility can be achieved by adding the appropriate browser vendor prefix.

In summary, using the :nth-of-type(2) pseudo-class selector can select the second element of the same type of element and add styles to it. This feature is very useful in web development, allowing us to more precisely control the style of elements on the page. You can flexibly use this feature to achieve various style effects according to actual needs.

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css css3 选择器伪类 ul li

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