Method getAttributeNS

src/undom.js:128–131

(ns, name)

			attr.value = String(value);
		}
		getAttributeNS(ns, name) {
			let attr = findWhere(this.attributes, createAttributeFilter(ns, name));
			return attr && attr.value;
		}
		removeAttributeNS(ns, name) {
			splice(this.attributes, createAttributeFilter(ns, name));
		}