How to set the painting area of the background with JavaScript?

In this tutorial, we will learn how to set the painting area of the background with JavaScript.

The task is to define the background painting area. The background-clip property is commonly used to square measure the painting space of any web page's background. It specifies that we will modify the webpage's background regarding its contents or images/videos.

The background-clip property specifies whether the background of an element extends beneath its border-box, padding box, or content box.

If the element does not have a background image or color, this property has no visual effect unless the border has transparent or partially opaque regions (due to border style or border-image); otherwise, the border masks the difference.

To set the painting area of the background with JavaScript, use the backgroundClip property.

Following are the methods used to set the painting area of the background with JavaScript.

Setting the Style backgroundClip Property to 'content-box"

The background is painted within the content box (clipped to it). The content-box property specifies the background color only for the content.

Everything in CSS has a box around it, and understanding these boxes is essential for creating more complex CSS layouts or aligning items with other items. The area in which your content is displayed is its size with properties such as inline-size and blocksize, as well as width and height in the content box property.

Syntax

document.getElementById("box").style.backgroundClip = "content-box";


The getElementById() method fetches the box properties and changes the background area of the box to match the content-box style.

Example

In the example, we have created a box with the border as 3px, whose color is dashed red. The padding between the box and content is 40px. The height and width of the box is 240px and 250px respectively. The box has a background color of yellow. The default value of the background-clip property is border-box which enables the background to extend to the edge of the element's border.

The box has some text written inside it. The painting area of the background is changed to content-box using the style.backgroundClip property. The painting area only covers this property's content area, excluding the padding area.

<html>
<style>
#box {
border: 3px dashed red;
width: 600px;
height: 100px;
background-color: yellow;
background-clip: border-box;
}
</style>
<body>
<h3> Setting the Style backgroundClip Property to 'content-box"
</h3>
<button onclick="displayFunc()"> Set painting area </button>
<div id="box">
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do
eiusmod tempor incididunt ut labore et dolore magna aliqua.
</div>
<script>
function displayFunc() {
document.getElementById("box").style.backgroundClip="content-box";
}
</script>
</body>
</html>


Setting the Style backgroundClip Property to 'padding-box'

The style sheet box model is a container with several properties such as borders, margin, padding, and content. It is used to create the layout and design of web pages. It can be used as a framework for modifying the layout of various elements. We will see how to use the box models known as Content Boxes in HTML.

To specify how far can a background color or image extends beyond the padding or content of an element; the background-clip property is used.

The padding box property clips the background at the outside edge of the element's padding, preventing it from extending into the border. When the background-clip property is set to padding-box, the background color stops where the element's padding ends.

Syntax

document.getElementById("box").style.backgroundClip = "padding-box";


The getElementById() method retrieves the box properties and modifies the background area of the box to match the padding-box style.

Example

In this example, we've crafted a box with a 3 px border with a dashed red background. The padding between the box and the content is 40px. The box's height and width is 240px and 250px, respectively. The box has a yellow background. The value of the background-clip property is the content box, as specified in the <style> tag, which allows the background to be clipped at the edge of the content box.

Inside the box is some lorem ipsum text. Using the style.backgroundClip property, the background painting area is changed to the padding. The painting area encompasses this box's full padding and content area, excluding the borders.

<html>
<style>
#box {
border: 3px dashed red;
width: 500px;
height: 100px;
background-color: yellow;
background-clip: content-box;
}
</style>
<body>
<button onclick="displayFunc()">Set painting area</button>
<div id="box">
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do
eiusmod tempor incididunt ut labore et dolore magna aliqua.
</div>
<script>
function displayFunc() {