SVGAnimatedNumber: baseVal property

Baseline Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since January 2020.

The baseVal property of the SVGAnimatedNumber interface represents the base (non-animated) value of an animatable numeric attribute.

Some animatable SVG attributes accept a single numeric value, such as the radius attribute of the <circle> or <ellipse> elements and the width and height attributes of the <rect> element, and many others. The baseVal property reflects and updates the base, or non-animated, value of the numeric attribute.

Value

A number; the base value of the attribute as a float.

Examples

This example includes a <path> element with a nested <animate> element that animates the value of the path's <pathLength> attribute:

html
<path d="M 0,40 h100" pathLength="90" id="path">
  <animate
    attributeName="pathLength"
    values="50; 90; 50;"
    dur="10s"
    repeatCount="indefinite" />
</path>
js
const path = document.querySelector("path");

console.log(path.pathLength.baseVal); // output: 90
path.pathLength.baseVal = 50; // updates the value
console.log(path.pathLength.baseVal); // output: 90

The baseVal reflect that value of the pathLength attribute. We also use the baseVal property to access the base (non-animating) value of the animating pathLength.

To access the current value of the pathLength value as it animates, use the SVGAnimatedNumber.animVal property.

Specifications

Specification
Scalable Vector Graphics (SVG) 2
# __svg__SVGAnimatedNumber__baseVal

Browser compatibility

Report problems with this compatibility data on GitHub
Chrome
Edge
Firefox
Opera
Safari
Chrome Android
Firefox for Android
Opera Android
Safari on iOS
Samsung Internet
WebView Android
WebView on iOS
baseVal

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Full support

See also