获取预览地址

/** 预览地址 */
let preview_url_s = await cocos_window.webContents.executeJavaScript('window.xxx.address')

// 不存在预览地址
if (!preview_url_s) {
  // 3.8.0 以下
  if (engine_version_n < 380) {
    await cocos_window.webContents.executeJavaScript(
      'window.xxx.$refs.qr.parentElement.dispatchEvent(new Event("mouseenter")); window.xxx.$refs.qr.parentElement.dispatchEvent(new Event("click"))'
    )
  }
  // 3.8.0 及以上
  else {
    await cocos_window.webContents.executeJavaScript(
      'window.xxx.$refs.qr.parentElement.firstChild.dispatchEvent(new Event("click"))'
    )
  }
  await new Promise<void>((resolve_f) => {
    const timer = setInterval(async () => {
      preview_url_s = await cocos_window.webContents.executeJavaScript('window.xxx.address')
      if (preview_url_s) {
        clearInterval(timer)
        resolve_f()
      }
    }, 0)
  })

  // 3.8.0 以下
  if (engine_version_n < 380) {
    cocos_window.webContents.executeJavaScript(
      'window.xxx.$refs.qr.parentElement.dispatchEvent(new Event("mouseleave"))'
    )
  }
  // 3.8.0 及以上
  else {
    cocos_window.webContents.executeJavaScript(
      'window.xxx.$refs.qr.parentElement.firstChild.dispatchEvent(new Event("click"))'
    )
  }
}

// 预览地址初始化
preview_url_s = `http://${preview_url_s}`
/** 预览端口 */
const preview_port_s = preview_url_s.slice(preview_url_s.lastIndexOf(':') + 1)