Making XHR and Fetch Requests behind the scenes if fireOnload is true!
trigger fetch
trigger fetch with Request Object
trigger fetch with URL Object
trigger fetch w/ omit credentials
trigger fetch with Request Object w/ omit credentials
trigger fetch with URL Object w/ omit credentials
trigger fetch w/ include credentials
trigger fetch with Request Object w/ include credentials
trigger fetch with URL Object w/ include credentials
trigger fetch with bad option
trigger fetch w/ preflight
trigger xmlHttpRequest
trigger xmlHttpRequest w/ credentials
trigger xmlHttpRequest w/ bad options
trigger xmlHttpRequest w/ preflight