google chrome - Find out if Developer Console is active in the current webbrower (JavaScript) -

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while developing logging tool websites, javascript code need know if developement tools (ie: developer tools, chrome: f12, firefox: firebug etc.) open.

until know possibily have found in research in ie10 asking for

window.__ie_devtoolbar_console_command_line

are there variables or functions can called in chrome, firefox (and opera) status of browsers developent tools.

i know there console object object not tell me if devtools open or closed.

you might find other thread useful: find out whether chrome console open

there information both firefox , chrome in there.


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