nodeName vs tagName
Written byPhuoc Nguyen
Created
16 Jun, 2020
Category
DOM
`nodeName` and `tagName` are the properties to get the name of HTML node.`tagName` is used to get the type of element nodes that have node type of 1. For other type of nodes such as attribute, comment, text, .etc,
`nodeName` is used to get the name of node.Let's take a look at the following example where we have a simple button:
html
<button id="login">Login</button>The
`nodeName` and `tagName` properties are the same for the HTML element:js
const button = document.getElementById('login');
button.nodeType; // 1
button.nodeName; // 'BUTTON'
button.tagName; // 'BUTTON'Let's access the node represents the
`id` attribute:js
const idNode = button.getAttributeNode('id');
idNode.nodeType; // 2
idNode.nodeName; // 'id'
idNode.tagName; // undefinedIn a similar way, the button text node gives different result for
`nodeName` and `tagName`:js
const content = button.firstChild;
content.nodeType; // 3
content.nodeName; // '#text'
content.tagName; // undefined
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Phước Nguyễn