How do I trace a network on Google Chrome?

Chrome :

Capturing the network trace file on Google Chrome From the Chrome menu bar, select View > Developer > Developer Tools . From the panel that opens, select the Network tab. Look for a round record button in the upper-left corner of the tab, and make sure it is red. If it is grey, click it once to start recording.

XHR is referred to “XmlHttpRequest” and it allows to make HTTP request in Javascript .