How to Get a Div Element's Background Image URL Using JavaScript?

Get Background Image URL of an Element Using JavaScript

Question: How can you retrieve the URL of the background image assigned to a specific <div> element using JavaScript? For instance, given the following HTML code:

<div>

How would you extract just the URL of the background image?

Answer: To accomplish this, follow these steps:

1. Identify the Element: Obtain a reference to the <div> element by its unique ID using document.getElementById('your_div_id').
2. Retrieve the Computed Style: Use the currentStyle or window.getComputedStyle() property to retrieve the computed styling of the identified element.
3. Extract Background Image URL: Access the backgroundImage property from the computed style. The URL is typically enclosed within parentheses, so slice(4, -1) is used to remove unwanted characters. Additionally, any double quotes within the URL are replaced using replace(/"/g, "").

The following code snippet illustrates this approach:

var img = document.getElementById('your_div_id'),
    style = img.currentStyle || window.getComputedStyle(img, false),
    bi = style.backgroundImage.slice(4, -1).replace(/"/g, "");

By employing this method, you can effectively retrieve and utilize the URL associated with the background image of a specific element in JavaScript.

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