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web api instance property

SVGAnimatedNumber: baseVal property

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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:

<path d="M 0,40 h100" pathLength="90" id="path">
  <animate
    attributeName="pathLength"
    values="50; 90; 50;"
    dur="10s"
    repeatCount="indefinite" />
</path>

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 animVal property.

Specifications

SpecificationsStandards references are available on the canonical MDN page.

Browser compatibility

Browser compatibilityCompatibility data is available on the canonical MDN page.

See also