Add textNode to g-element in SVG

addTextToG.js

// textToDisplay = whatever you want to fill the textnode with
// elementId g element id (that the textnode will be appended to)
function addTextToG(textToDisplay, elementId) {
	// create svg text node
	var textNode = document.createElementNS("http://www.w3.org/2000/svg","text");
	textNode.appendChild(document.createTextNode(textToDisplay));
	
	// append created textnodes to g nodes
	document.getElementById(elementId).appendChild(textNode);
}