Function _addClass

external/.datatables.js:1338–1347

(el, name)

	// Similar to jQuery's addClass, but use classList.add
	function _addClass(el, name) {
		if (name) {
			name.split(" ").forEach(function (n) {
				if (n) {
					// `add` does deduplication, so no need to check `contains`
					el.classList.add(n)
				}
			})
		}
	}

	/**
	 * DataTables utility methods