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element.hasPointerCapture

The hasPointerCapture() method of the Element interface indicates whether the element on which it is invoked has pointer capture for the pointer identified by the given pointer ID.

Syntax

targetElement.hasPointerCapture(pointerId);

Arguments

pointerId: The identifier for a pointer event.

Return value

A boolean value — true if the element does have ponter capture, false if it doesn't.

Examples

<html>
  <script>
    function downHandler(ev) {
      const el = document.getElementById("target");
      // Element 'target' will receive/capture further events
      el.setPointerCapture(ev.pointerId);

      ...

      // Check whether element still has pointer capture
      let pointerCap = el.hasPointerCapture(ev.pointerId);
      if(pointerCap) {
        // We've still got pointer capture 
      } else {
        // oops, we've lost pointer capture!
      }
    }

    function init() {
      const el = document.getElementById("target");
      el.onpointerdown = downHandler;
    }
  </script>
  <body onload="init();">
    <div id="target"> Touch me ... </div>
  </body>
</html>

Specifications

Specification	Status	Comment
Pointer Events – Level 2 The definition of 'hasPointerCapture()' in that specification.	Working Draft

Browser compatibility

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