UAParser.js
{UAParser.js} is a JavaScript library to detect user's Browser, Engine, OS, CPU, and Device type/model. Runs either in browser (client-side) or node.js (server-side).
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About
{UAParser.js} abstracts away the hassle of User-Agent detection by turning them into a set of well-structured & meaningful data so you can focus on what really matters.
Now, detecting browser is as simple as ua.getBrowser()
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Faisal Salman