How to hide using HTML tags

In the process of website development, HTML tags are a very commonly used tool. HTML tags can be used to set the style and layout of web pages to achieve diverse effects. But sometimes we need to use HTML tags to hide some elements. For example, in some specific cases, you don’t want certain content to be displayed. At this time, hiding HTML tags comes in handy. Let’s learn how to use HTML tags. To hide.

1. Methods of hiding elements

1. display: none;

The display attribute is a built-in attribute of CSS, through which the element can be Show and hide. When we want to hide a certain element, we can use the display: none attribute. The specific code is as follows:

.hide {
   display: none;
}

In the above code, we set display:none for the element with the class name "hide" Attribute, this element will be hidden.

But it should be noted that using display:none will completely remove the element from the document flow, which means that the element no longer occupies the position in the web page, but the code of the element still exists in the HTML document , so it may have a certain impact on SEO in some cases.

2. visibility: hidden;

The visibility property is also a built-in property of CSS, which can control the hiding and display of elements. When we want an element to be hidden while retaining its position, we can use the visibility:hidden attribute. The code is as follows:

.hide {
   visibility: hidden;
}

In the above code, we also set visibility for the element with the class name "hide" :hidden attribute, so that the element will be hidden, but it will still occupy its position in the web page, but it will not be visible on the screen.

But it should be noted that using visibility:hidden will still occupy the document flow space, so it will still affect the layout, but the impact will be smaller than display:none.

3. opacity: 0;

opacity is a new style attribute in CSS3, which can control the opacity of elements. Set the opacity attribute of the element to 0, which means it is completely transparent, that is, the effect of disappearing. The code is as follows:

.hide {
    opacity: 0;
}

It should be noted that when using opacity:0 to hide an element, the element still occupies the space and It is not removed from the document flow, and its child elements are hidden as well.

2. Use attribute selectors to hide

In addition to the above methods, we can also hide based on the attributes of the element, which requires the use of attribute selectors. For example:

1. [hidden]

In the HTML5 standard, a new hidden attribute is added, which can be used to hide elements. The code is as follows:

<div hidden="hidden">...</div>

In the above code, we set the hidden attribute for the div element, and the element will be hidden.

2. [aria-hidden="true"]

If you want to hide based on other attributes of the element, you can use attribute selectors, such as aria-hidden Attribute, the code is as follows:

<div aria-hidden="true">...</div>

Among them, aria-hidden="true" means that the element is hidden.

3. Summary

Through the above introduction, we have learned about several methods of hiding HTML tags, and can choose the corresponding method to hide and display elements according to actual needs. And you should pay attention to some details when using it. For example, different hiding methods have different effects on web page layout and SEO, and you need to choose according to the specific situation.

The above is the detailed content of How to hide using HTML tags. For more information, please follow other related articles on the PHP Chinese website!