D3 Appending Text to a SVG Rectangle

I'm looking to append html onto a rectangle in D3 to give me a multiple line tooltip. The bottom part is how I'm adding a rectangle which may be part of the problem. The top is the code that should work in my world.

 newRect.().html(" <textArea font-family=Verdana font-size=20 fill=blue > Test " + "</br>" + "Test2 </textArea>");

Which does insert a text field into the SVG, it just doesn't display:
HTML:

<rect id="rectLabel" x="490" y="674" width="130" height="160" fill="red">
    <textarea fill="blue" font-size="20" font-family="Verdana"> Test </br>Test2 </textarea>
</rect>

I have a mouse over function which runs the following:

    newRect = svg.append("rect")
    .attr("x", xCor)
    .attr("y", yCor)
    .attr("width", 130)
    .attr("height", 160)
    .attr("fill", "red")
    .attr("id", "rectLabel");

I think I should be doing this but it doesn't work. It just removes the g.node that I'm trying to append to.

    newRect = $(this).enter().append("rect")
    .attr("x", xCor)
    .attr("y", yCor)
    .attr("width", 130)
    .attr("height", 160)
    .attr("fill", "red")
    .attr("id", "rectLabel");

Question: Why doesn't my text appear? Ive tried .html, .textArea. I want a multiple line label so I don't think .text will work correct? Also, how should I be appending the rectangle?