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火狐附加组件可以访问chrome浏览器的这些东西：chrome://browser/content/devtools/inspector/inspector.xul上下文：
window.inspector
定义在inspector-panel.js. 的属性和函数：
- .selection - information about the inspector's selection:
- .isNode() - returns true if selection is node.
- .node - returns the actual element from the page
- .window - the window object of the frame the selection is in.
- .markDirty() - marks that the page has been changed by the inspector - a warning will be shown when leaving the page, since changes made through the inspector are rewritten on reload.
Bindable events using on:
markuploaded
Called when the left panel has been refreshed, after page change.
ready
Called on first markuploaded.
pseudoclass
Called after toggle of a pseudoclass.
layout-change
"low-priority change event for things like paint and resize."