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- Tags: JS DOM, JS DOM Element
- Categories: JavaScript Methods, JavaScript Reference, Reference
Last Updated on November 18, 2022
Quick Reference
The Element isEqualNode() returns true if two elements are equal.
To be equal they must have the:
- Same nodeType
- Same nodeName
- Same nodeValue
- Same nameSpaceURI
- Same childNodes with all the descendants
- Same attributes and attribute values
- Same localName and prefix
Note
A node can be an HTML element (div, span, p, h2, etc.), or it can be a text node (plain text, white space, a teb, a linebreak). Whereas, when referring just to an element, only the HTML elements are relevant.
<!-- lists to compare -->
<ul id="my_list1"><li>Lamborghini</li><li>Ferrari</li></ul>
<ul id="my_list2"><li>Lamborghini</li><li>Maserati</li></ul>
<button onclick="my_function('my_list1','my_list2')">Compare Lists</button>
<!-- html element to place output -->
<p id="my_output"></p>
// variables
let my_element = document.documentElement;
let my_answer = my_element.isDefaultNamespace('http://www.w3.org/1999/xhtml');
// function for comparison
function my_function(x,y) {
var item_1 = document.getElementById(x).firstChild;
var item_2 = document.getElementById(y).firstChild;
var z = item_1.isEqualNode(item_2);
document.getElementById('my_output').innerHTML = z;
}
Output
true
Syntax
element.isEqualNode(node)
// or
node.isEqualNode(node)
We’d like to acknowledge that we learned a great deal of our coding from W3Schools and TutorialsPoint, borrowing heavily from their teaching process and excellent code examples. We highly recommend both sites to deepen your experience, and further your coding journey. We’re just hitting the basics here at 1SMARTchicken.
JavaScript
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JAVASCRIPT NOTES:
- When using JavaScript, single or double quotation marks are acceptable and work identically to one another; choose whichever you prefer, and stay consistent
- JavaScript is a case-sensitive language; firstName is NOT the same as firstname
- Arrays count starting from zero NOT one; so item 1 is position [0], item 2 is position [1], and item 3 is position [2] … and so on
- JavaScript variables must begin with a letter, $, or _
- JavaScript variables are case sensitive (x is not the same as X)
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