Element: localName property

Baseline Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.

Thuộc tính Element.localName là thuộc tính chỉ đọc trả về the local part of the qualified name of an element.

Giá trị

Một chuỗi representing the local part of the element's qualified name.

Ví dụ

(Must be served with XML content type, such as text/xml or application/xhtml+xml.)

xml

<html xmlns="http://www.w3.org/1999/xhtml"
      xmlns:svg="http://www.w3.org/2000/svg">
<head>
  <script><![CDATA[
function test() {
  const text = document.getElementById("text");
  const circle = document.getElementById("circle");

  text.value = `<svg:circle> has:
localName = "${circle.localName}"
namespaceURI = "${circle.namespaceURI}"`;
}
  ]]></script>
</head>
<body onload="test()">
  <svg:svg version="1.1"
    width="100px" height="100px"
    viewBox="0 0 100 100">
    <svg:circle cx="50" cy="50" r="30" fill="#aaaaaa" id="circle"/>
  </svg:svg>
  <textarea id="text" rows="4" cols="55"/>
</body>
</html>

The local name of a node is that part of the node's qualified name that comes after the colon. Qualified names are typically used in XML as part of the namespace(s) of the particular XML documents. For example, in the qualified name comm:partners, partners is the local name and comm is the prefix:

xml

<comm:business id="soda_shop" type="brick_n_mortar" xmlns:comm="http://example.com/comm">
  <comm:partners>
    <comm:partner id="1001">Tony's Syrup Warehouse
    </comm:partner>
  </comm:partner>
</comm:business>

Note: While the property trả về the case of the internal DOM storage, which is lower case, note that tagName property trả về upper case for HTML elements in HTML DOMs.