How to Retrieve All Inline and External Styles of an HTML Element by ID?

Retrieving Style Properties of an HTML Element by Element ID

You want to craft a function that, when given an element's ID, retrieves all the styles applied to it, both inline and externally defined.

Here's a comprehensive solution:

<code class="js">function getStyleById(id) {
    return getAllStyles(document.getElementById(id));
}

function getAllStyles(elem) {
    if (!elem) return []; // Element does not exist, return empty list.
    var win = document.defaultView || window, style, styleNode = [];
    if (win.getComputedStyle) { /* Modern browsers */
        style = win.getComputedStyle(elem, '');
        for (var i = 0; i <p>Here's a breakdown:</p>
<ul>
<li>Iterate through the style object provided by getComputedStyle to obtain all style properties and their values.</li>
<li>For browsers that support currentStyle (IE), iterate over that object.</li>
<li>Handle inline styles by iterating directly over the style property of the element.</li>
<li>The result is an array of strings in the format "propertyName:propertyValue".</li>
</ul></code>

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