1. Use CTRL+SHIFT+I (or navigate to Current Page Control > Developer > Developer Tools. In the newer versions of Chrome, click the Wrench icon > Tools > Developer Tools.) to enable the Developer Tools.
2. From within the developer tools click on the Network button. If it isn't already, enable it for the session or always.
3. Click the "XHR" sub-button.
4. Initiate an AJAX call.
5. You will see items begin to show up in the left column under "Resources".
6. Click the resource and there are 2 tabs showing the headers and return content.

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1. Press Ctrl + Shift + E ( Command + Option + E on a Mac).
2. Select "Network" from the Web Developer menu, (which is a submenu in the Tools menu on OS X and Linux).
3. Click the wrench icon (), which is in the main toolbar or under the Hamburger menu (), then select "Network".

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