SVGSVGElement: checkEnclosure() method

The checkEnclosure() method of the SVGSVGElement interface checks if the rendered content of the given element is entirely contained within the supplied rectangle.

Each candidate graphics element is to be considered a match only if the same graphics element can be a target of pointer events as defined in pointer-events processing.

Syntax

js
checkEnclosure(element, rect)

Parameters

element

An Element representing the SVG graphics element to check.

rect

An SVGRect object that defines the rectangle to check against.

Return value

A boolean.

Examples

Checking if an Element is Enclosed in a Rectangle

html
<svg id="exampleSVG" width="200" height="200">
  <rect
    id="checkRect"
    x="10"
    y="10"
    width="100"
    height="100"
    fill="none"
    stroke="red" />
  <circle id="targetElement" cx="50" cy="50" r="30" fill="blue" />
</svg>
<button id="checkEnclosureBtn">Check Enclosure</button>
<pre id="result"></pre>
js
const svgElement = document.getElementById("exampleSVG");
const checkRect = svgElement.getElementById("checkRect");
const targetElement = svgElement.getElementById("targetElement");
const resultDisplay = document.getElementById("result");

document.getElementById("checkEnclosureBtn").addEventListener("click", () => {
  const rect = svgElement.createSVGRect();
  rect.x = checkRect.x.baseVal.value;
  rect.y = checkRect.y.baseVal.value;
  rect.width = checkRect.width.baseVal.value;
  rect.height = checkRect.height.baseVal.value;

  const isEnclosed = svgElement.checkEnclosure(targetElement, rect);
  resultDisplay.textContent = `Is the circle enclosed in the rectangle? ${isEnclosed}`;
});

Specifications

Specification
Scalable Vector Graphics (SVG) 2
# __svg__SVGSVGElement__checkEnclosure

Browser compatibility

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

Legend

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Full support
Full support

See also