James Howell questions

• Update query adding ObjectIDs to array twice
• Window.matchmedia listener firing twice
• ES6 Class - Call method from within event handler
• Can't start Jenkins service on Ubuntu
• JQuery plugin not working when used multiple times in a page
• JQuery plugin not working when used in multiple places in a single page
• MERN Stack - Express and React on same port?
• React State Hook - toggle a class
• How to detect which device view you're on using Twitter Bootstrap API?

James Howell answers