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Manipulating CSS Styles In JavaScript
JavaScript is a powerful tool for manipulating the Document Object Model (DOM), which includes all the elements on a web page. One of the most common ways to manipulate the DOM is by changing the CSS styles of elements.
There are several ways to change the CSS styles of an element using JavaScript.
Code For style property In JavaScript
The first way is by using the style property of the element. This property allows you to directly access and change the styles of the element.
For example, if you have a div element with the ID of “myDiv”, you can change its background color to red by using the following code:
document.getElementById("myDiv").style.backgroundColor = "red";
Code For classList Property In JavaScript
Another way to change the CSS styles of an element is by using the classList property. The classList property allows you to add, remove, or toggle CSS classes on an element.
For example, if you have a CSS class called “highlight” that changes the background color of an element to yellow, you can add that class to the “myDiv” element using the following code:
document.getElementById("myDiv").classList.add("highlight");
You can also remove the class using remove() method, and toggle it using toggle().
document.getElementById("myDiv").classList.remove("highlight");
document.getElementById("myDiv").classList.toggle("highlight");
A third way to change the CSS styles of an element is by using the setAttribute method. This method allows you to set the value of a specific attribute on an element.
For example, if you want to change the width of an element, you can use the following code:
document.getElementById("myDiv").setAttribute("style","width:50px;");
Code For getComputedStyle In JavaScript
A fourth way to change the CSS styles of an element is by using the getComputedStyle method. This method allows you to get the computed styles of an element, which includes all the styles that have been applied to the element, including styles from CSS classes and inline styles.
For example, if you want to get the computed width of an element, you can use the following code:
var computedStyle = window.getComputedStyle(document.getElementById("myDiv"));
var width = computedStyle.getPropertyValue("width");
console.log(width);
Finally, a fifth way to change the CSS styles of an element is by using a JavaScript library such as jQuery or D3.js.
These libraries provide a convenient and easy-to-use API for manipulating the DOM and changing CSS styles. For example, if you want to change the background color of an element using jQuery, you can use the following code:
$("#myDiv").css("background-color", "red");
You can use the style property, classList property, setAttribute method, getComputedStyle method or use a JavaScript library such as jQuery or D3.js. It all depends on the use case and personal preference.
Conclusion
In conclusion, manipulating CSS styles in JavaScript is a powerful tool for creating dynamic and interactive web pages.
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