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modernizr

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Modernizr is a JavaScript library that detects HTML5 and CSS3 features in the user’s browser.

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/*! { "name": "ES5 Function", "property": "es5function", "notes": [{ "name": "ECMAScript 5.1 Language Specification", "href": "https://www.ecma-international.org/ecma-262/5.1/" }], "polyfills": ["es5shim"], "authors": ["Ron Waldon (@jokeyrhyme)"], "tags": ["es5"] } !*/ /* DOC Check if browser implements ECMAScript 5 Function per specification. */ define(['Modernizr'], function(Modernizr) { Modernizr.addTest('es5function', function() { return !!(Function.prototype && Function.prototype.bind); }); });