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HomeWeb Front-endCSS TutorialHow to Retrieve All Styles of an Element Using Only Its ID?

How to Retrieve All Styles of an Element Using Only Its ID?

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:

  1. 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.
  2. Optimize Loops: Enhance efficiency by storing getComputedStyle outside the loop in a separate variable.
  3. 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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