Do I still need setAttributeNS() for href on a element in modern browsers?

In modern browsers, the plain href attribute set via regular setAttribute() generally works for elements, so setAttributeNS() with xlink is mainly needed for older browser support or legacy content.

SVG setAttributeNS() Method

setAttributeNS() is required for namespaced SVG attributes, most notably the xlink:href references used by use and other elements.

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When Namespaced Attributes Require setAttributeNS()

Most standard SVG attributes are set fine with plain setAttribute(), but certain attributes belong to a specific namespace — historically most notably xlink:href used by elements like <use> and <textPath> — and these require setAttributeNS() with the appropriate namespace URI to be set correctly when scripting SVG dynamically.

Most standard SVG attributes are set fine with plain setAttribute()
Namespaced attributes like xlink:href historically require setAttributeNS()
Used by elements like <use> and <textPath> for their reference attributes

The Modern href Simplification

Modern SVG has largely moved to a plain href attribute that works with regular setAttribute() for elements like <use>, reducing the need for setAttributeNS() with the xlink namespace, though setAttributeNS() with the xlink namespace URI remains relevant when supporting older browsers or working with content that still uses the legacy xlink:href form.

Modern SVG's plain href attribute works with regular setAttribute()
This reduces the need for setAttributeNS() with the xlink namespace
setAttributeNS() remains relevant for older browsers or legacy xlink:href content

Frequently Asked Questions

Do I still need setAttributeNS() for href on a <use> element in modern browsers?

In modern browsers, the plain href attribute set via regular setAttribute() generally works for <use> elements, so setAttributeNS() with xlink is mainly needed for older browser support or legacy content.

What namespace URI does the xlink namespace use?

The xlink namespace URI is 'http://www.w3.org/1999/xlink', which is the namespace argument passed to setAttributeNS() when setting a legacy xlink:href attribute.

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