SVGPatternElement: y 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.

The y read-only property of the SVGPatternElement interface describes the y-axis coordinate of the start point of the pattern as an SVGAnimatedLength. It reflects the computed value of the y attribute on the <pattern> element.

The attribute value can be a <length>, <percentage>, or <number>. The numeric value of the SVGAnimatedLength.baseVal is the y-coordinate of the pattern's starting point in the user coordinate system.

Value

An SVGAnimatedLength.

Example

Given the following SVG:

html
<svg viewBox="0 0 200 200" xmlns="http://www.w3.org/2000/svg">
  <defs>
    <!-- First pattern -->
    <pattern
      id="pattern1"
      y="50"
      width="20"
      height="20"
      patternUnits="userSpaceOnUse">
      <circle cx="10" cy="10" r="10" fill="blue" />
    </pattern>
    <!-- Second pattern -->
    <pattern
      id="pattern2"
      y="100"
      width="20"
      height="20"
      patternUnits="userSpaceOnUse">
      <circle cx="10" cy="10" r="10" fill="red" />
    </pattern>
  </defs>
  <!-- Using the patterns -->
  <rect x="0" y="0" width="100" height="100" fill="url(#pattern1)" />
  <rect x="100" y="0" width="100" height="100" fill="url(#pattern2)" />
</svg>

We can access the computed values of the y attributes:

js
const patterns = document.querySelectorAll("pattern");

console.log(patterns[0].y.baseVal.value); // output: 50
console.log(patterns[1].y.baseVal.value); // output: 100