Function buildElementFromDestination

test/fixtures/wpt/resources/sriharness.js:61–91

(resource_url, destination, attrs)

}

function buildElementFromDestination(resource_url, destination, attrs) {
  // Assert: |destination| is a valid destination.
  let element;

  // The below switch is responsible for:
  //   1. Creating the correct subresource element
  //   2. Setting said element's href, src, or fetch-instigating property
  //      appropriately.
  switch (destination) {
    case "script":
      element = document.createElement(destination);
      set_extra_attributes(element, attrs);
      element.src = resource_url;
      break;
    case "style":
      element = document.createElement('link');
      set_extra_attributes(element, attrs);
      element.rel = 'stylesheet';
      element.href = resource_url;
      break;
    case "image":
      element = document.createElement('img');
      set_extra_attributes(element, attrs);
      element.src = resource_url;
      break;
    default:
      assert_unreached("INVALID DESTINATION");
  }

  return element;
}

// When using SRIPreloadTest, also include /preload/resources/preload_helper.js
// |number_of_requests| is used to ensure that preload requests are actually