How to remove the underline of a tag using CSS

In front-end development, the a tag is a tag that is often used. It is used to link to other web pages or anchors, etc. However, by default, there will be a default underline under the a tag, which has a certain impact on the beauty of the page. So, how to remove the underline under the a tag? Let's take a look at how to remove the underline of the a tag through CSS.

1. Use the text-decoration attribute

The text-decoration CSS attribute is used to control the presentation of text, including text underline, strikethrough, etc., so we can set text -decoration is none to remove the underline of the a tag. The code example is as follows:

a {
    text-decoration: none;
}

This CSS code means to remove the underline under all a tags.

2. Use the border-bottom attribute

In addition to using the text-decoration attribute, you can also use the border-bottom attribute to achieve the effect of removing the underline of the a tag. By setting border-bottom to none, you can also remove the underline under the a tag. The code example is as follows:

a {
    border-bottom: none;
}

3. Use pseudo-class selector

You can also remove it through pseudo-class selector a tag is underlined. Pseudo-class selectors can represent elements in a certain state, such as hover state, visited state, etc. We can remove the underline under the a tag by setting the :hover or :visited pseudo-class selector. The code example is as follows:

a:hover,
a:visited {
    text-decoration: none;
}

This CSS code indicates that in the hover or visited state, the underline under the a tag is removed. .

4. Use JS to achieve

In addition to using CSS to achieve the effect of removing the underline of the a tag, we can also use JS to achieve it. We can use JS to traverse all a tags and set CSS styles on these a tags. The code example is as follows:

var allLink = document.getElementsByTagName("a");
for (var i = 0, len = allLink.length; i < len; i++) {
    allLink[i].style.textDecoration = "none";
}

This JS code means traversing all a tags and setting the textDecoration of these tags to none.

Summary:

This article mainly introduces four methods to remove the underline of a tag through text-decoration attribute, border-bottom attribute, pseudo-class selector and JS implementation. Mastering these four methods can make the pages we develop more beautiful and facilitate the user experience. Of course, in actual development, you should also choose the appropriate method to remove the underline of the a tag depending on the situation. This is also a process that developers need to continue to learn and accumulate.

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