xhr: Inner Page Fetch

When the original image only exists on an inner page, use xhr to fetch the inner page and parse the image.

Structure Example

xhr: {
  url: '.showcase__link',
  query: 'img[fetchpriority]'
}

Field Description

Field	Description
url	Inner page link (selector, regex, or function)
query	Inner page image selector or function
caption	Optional, description text
headers	Optional, request headers
cacheNum	Optional, cache count

Advanced: Function Form

xhr: {
  url: function (a) {
    if (!a) return
    return a.href
  },
  query: function (html, doc) {
    let img = doc.querySelector('#img')
    return img && img.src
  }
}

Return Value

• String: Single image.
• Array: Multiple images.
• Object: { url: [], cap: '' }.

Notes

• Inner page requests consume network resources, use only when necessary.
• Can be combined with cacheNum to reduce duplicate requests.