modernizr/feature-detects/dom/dataset.js

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

/*!
{
  "name": "dataset API",
  "caniuse": "dataset",
  "property": "dataset",
  "tags": ["dom"],
  "authors": ["@phiggins42"]
}
!*/
define(['Modernizr', 'createElement'], function( Modernizr, createElement ) {
  // dataset API for data-* attributes
  Modernizr.addTest('dataset', function() {
    var n = createElement("div");
    n.setAttribute("data-a-b", "c");
    return !!(n.dataset && n.dataset.aB === "c");
  });
});