Table of Contents
Changing CSS Inline Styles
The document.getElementById() method chooses an element with a specific id while the document.getElementsByTagName() method selects all elements with a specified tag name.
The document.querySelector() method allows users to select elements based on CSS selectors. After selection, you can modify the style attribute to change the styles. The below code changes the background color to red.
document.getElementById("myElement").style.backgroundColor = "red";
Kindly note that Js style preference precedes the CSS style if already defined. This method modifies styles one by one. Users can also set multiple styles simultaneously using Js by parsing the string value to cssText as shown below:
document.getElementById("myElement").style.cssText = "background-color: red; font-size: 20px; width: 100px;";
Changing CSS Class
document.getElementById("myElement").className = "newClass";
Changing CSS Dynamically
Dynamically changing CSS properties is a must when users encounter a large amount of data that needs modification. By exploiting this property, users can apply changes that are also applicable to future elements. This creates a need to change the CSS sheet as a whole.
The user selects the required stylesheet and loops through all its rules to get the desired element. You can then modify it as per requirement.
Appending/Deleting A CSS Sheet
Users can append or replace the CSS sheet by following simple steps. It is useful when we have multiple stylesheets for a dynamic webpage. Create a new stylesheet using template literals. Select the head of the page and append the new stylesheet content using “document.createTextNode” and “appendChild”.
When “!important” is used in CSS, this overwrites any functionality already written in HTML. To override this, users can use the priority parameter on “setProperty” function of Js.
Can JS use to update CSS styles?
Does CSS in JS have an impact on performance?
While loading big external style sheets might harm speed metrics, basic CSS is faster for browsers to render than code-generated styling. Static CSS provides a softer learning curve than less complicated CSS-in-JS frameworks.
How can I alter the colors in js?
To alter the text color, use the getElementById() function and the style. color attribute. In this case, the text element may be obtained using the getElementById() function, and the color attribute can be applied using HTML.
What exactly is the CSS-in-JS library?
When the value of an element changes, the change event fires (only works on input>, textarea>, and select> elements). The change() method either initiates the change event or adds a function to be executed when a change event occurs. The change event happens when an option in a choose menu is selected.
Hi, I’m Geoff. I design. I develop. I do lots of things in between. What that really boils down to is that I make websites.