JSFiddle - React, Tailwind, and code Playground

HTML

<span data-label="Name" data-icon="user"></span>

JavaScript

var widgets = {
    options: {
        label: null,
        icon: null
    }
};
var span = document.querySelector('span');
console.log(span.dataset); // DOMStringMap {label: "Name", icon: "user"}
widgets.options = Object.assign({} ,span.dataset);
console.log(widgets.options); // Object {label: "Name", icon: "user"}