How to Gather All Styles from an Element Using Only Its ID
In this question, we aim to develop a function, getStyleById, that retrieves all the style attributes and their corresponding values for a specified element, given only its ID. This function should consider both inline styles and styles defined within CSS files.
Solution:
To achieve this, we can employ a comprehensive approach:
- Loop through the Properties: Retrieve all known property names using a loop that iterates through the CSSStyleDeclaration object (getComputedStyle). For each name, obtain the value using getPropertyValue.
- Optimize Loops: Enhance efficiency by storing getComputedStyle outside the loop in a separate variable.
- Inline Style Handling: Utilize an ordinary for…in loop to retrieve inline style information.
Code Implementation:
<code class="javascript">function getStyleById(id) { return getAllStyles(document.getElementById(id)); } function getAllStyles(elem) { if (!elem) return []; // Empty list if element is absent. var win = document.defaultView || window, style, styleNode = []; if (win.getComputedStyle) { /* Modern browsers */ style = win.getComputedStyle(elem, ''); for (var i=0; i<style.length i stylenode.push style style.getpropertyvalue else if ie for name in ancient browser.. return stylenode><p>By incorporating these methods, our function can effectively gather all applied styles for a given element, enhancing its utility for various tasks.</p></style.length></code>
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