Access the selected node in the Console
When you select a node under the Elements tab, Chrome DevTools adds
`== $0` right after the node.In give us a hint that we can use the
`$0` expression to access the selected node.
You can invoke any DOM APIs from `$0`.
The DevTools remembers the last five selected nodes. In addition to
`$0`, we can use `$1`, `$2`, `$3` and `$4` to access the last selected nodes.You also can right-click the node, and choose Store as global variable from the context menu. DevTools creates a variable,
`temp1` for example, to represent the selected node.
Now you can use `temp1` to manage the node in the same way as `$0`.