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Can I use a JavaScript library like jQuery, MooTools or Prototype to build my add-on?

April 26, 2017add-on build Javascript jquery library mootools prototype

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Can I use a JavaScript library like jQuery, MooTools or Prototype to build my add-on?

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Yes. It’s possible, but some of the functionality provided by these libraries are available through XPCOM, XUL, and JS 1.8. In addition, authors should take care if libraries modify primitive object prototypes (String.prototype, Date.prototype, etc.) and/or define global functions (eg. the $ function). These are prone to cause conflict with other add-ons, in particular if different add-ons use different versions of libraries and so on. Developers need to be very, very careful with using them. Mozilla does not offer documentation on using them to build add-ons.