This domain exposes CSS read/write operations. All CSS objects (stylesheets, rules, and styles)
have an associated id used in subsequent operations on the related object. Each object type has
a specific id structure, and those are not interchangeable between objects of different kinds.
CSS objects can be loaded using the get*ForNode() calls (which accept a DOM node id). A client
can also keep track of stylesheets via the styleSheetAdded/styleSheetRemoved events and
subsequently load the required stylesheet contents using the getStyleSheet[Text]() methods.
This domain exposes DOM read/write operations. Each DOM Node is represented with its mirror object
that has an id. This id can be used to get additional information on the Node, resolve it into
the JavaScript object wrapper, etc. It is important that client receives DOM events only for the
nodes that are known to the client. Backend keeps track of the nodes that were sent to the client
and never sends the same node twice. It is client’s responsibility to collect information about
the nodes that were sent to the client. Note that iframe owner elements will return
corresponding document elements as their child nodes.
DOM debugging allows setting breakpoints on particular DOM operations and events. JavaScript
execution will stop on these operations as if there was a regular breakpoint set.
EventBreakpoints permits setting JavaScript breakpoints on operations and events
occurring in native code invoked from JavaScript. Once breakpoint is hit, it is
reported through Debugger domain, similarly to regular breakpoints being hit.
Network domain allows tracking network activities of the page. It exposes information about http,
file, data and other requests and responses, their headers, bodies, timing, etc.