Typically it seems to poll window height/width vars in js. https://github.com/sindresorhus/devtools-detect Another variant: https://stackoverflow.com/questions/7798748/find-out-whether...
Typically it seems to poll window height/width vars in js. https://github.com/sindresorhus/devtools-detect Another variant: https://stackoverflow.com/questions/7798748/find-out-whether...