| <!doctype html> | 
 | <html> | 
 | <head><title>running</title></head> | 
 | <body><script> | 
 | window.onload = function () { | 
 |   const params = new URL(document.location).searchParams; | 
 |   const api = params.get('api'); | 
 |   if (api == "xhr") { | 
 |     const xhr = new XMLHttpRequest(); | 
 |     xhr.open('get', params.get('url'), true); | 
 |     xhr.onload = e => document.title = 'load'; | 
 |     xhr.onerror = e => document.title = 'error'; | 
 |     xhr.onabort = e => document.title = 'abort'; | 
 |     xhr.send(); | 
 |   } else if (api == "fetch") { | 
 |     fetch(params.get('url')).then( | 
 |       e => document.title = 'load', | 
 |       e => document.title = 'error'); | 
 |   } else { | 
 |     document.title = "unknown api"; | 
 |   } | 
 | }; | 
 | </script></body> | 
 | </html> |