How to remove css style in js

JavaScript is one of the most commonly used programming languages ​​in web design. In actual development, JavaScript can be used to do many things, including manipulating CSS styles. In this article, we will discuss how to remove CSS styles using JavaScript.

CSS style is a language that describes the layout and style of web pages. In CSS, we can define various styles, including text color, background color, font size, and more. These styles can be applied to various elements of a web page, changing their appearance on the page. But sometimes we need to remove the style of a certain element in the web page, then we need to use JavaScript.

In JavaScript, we can remove CSS styles in many ways. Below we will introduce the two most common methods.

Method 1: Use removeAttribute()

The removeAttribute() method is used to remove the attributes of an element. We can use this to remove CSS styles. The specific operations are as follows:

1. First, we need to obtain the element whose style needs to be removed. Elements can be obtained using the document.getElementById() or document.querySelector() methods in JavaScript.

2. Next, we need to use the removeAttribute() method to remove the specified style. This method requires a string parameter indicating the style to be removed. For example, if we need to remove the font size style, we can use the following code:

element.removeAttribute("style");

In this example, element is the element whose style needs to be removed.

3. Finally, we need to call this method in JavaScript. This can be achieved by using the following code in JavaScript code:

document.getElementById("myElement").removeAttribute("style");

In this example, we use the document.getElementById() method to get the element with the ID myElement and remove its style.

Method 2: Use classList.remove()

The classList.remove() method is used to remove a class from the element's class list. This method can be used to remove CSS styles. The specific operations are as follows:

1. First, we need to obtain the element whose style needs to be removed. Elements can be obtained using the document.getElementById() or document.querySelector() methods in JavaScript.

2. Next, we need to use the classList.remove() method to remove the specified style. This method requires a string parameter indicating the style to be removed. For example, if we need to remove the font size style, we can use the following code:

element.classList.remove("myFontClass");

In this example, element is the element whose style needs to be removed, and myFontClass is the style that needs to be removed.

3. Finally, we need to call this method in JavaScript. This can be achieved by using the following code in JavaScript code:

document.getElementById("myElement").classList.remove("myFontClass");

In this example, we use the document.getElementById() method to get the element with the ID myElement and remove its style.

Summary

There are two main ways to remove CSS styles in JavaScript: using removeAttribute() and using classList.remove(). These methods can be used to remove any CSS style, including font size, color, background color, etc. No matter which element you wish to remove CSS styles from, these two methods will work.

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