D3JS Appended Text and Mouse Behaviors Won't Appear

Question

A summary of the issue: Rectangles show up fine, but the text labels don't show up at all, and the mouse behaviors (just fading to different colors) don't work at all. I'm still fairly new to D3JS so it's probably a "noob" question, but I just cannot pick out the issue - though I'm guessing it has to do with what I use to append.

Here is my code:

        var w = 1000;
        var h = 1000;

        var svgBody = d3.select("body").append("svg")
            .attr("width", w)
            .attr("height", h);

        var contributors = [{name: "a", iy: 30}, 
            {name: "b", iy: 60},
            {name: "c", iy: 90},
            {name: "d", iy: 120}];


        var r = svgBody.selectAll(".rect").data(contributors)
            .enter()
            .append("g")
                .attr("class", "rect");

       r.append("rect")
            .attr("width", 90)
            .attr("height", 20)
            .style("fill", "#db8215")
            .attr("stroke", "black")
            .attr("x", 400)
            .attr("y", function(d){return d.iy});


        //Mouse behaviors
        //Mouseover - it turns slightly lighter
        r.on("mouseover", function(d){
            d3.select(this).select("rect").transition()
                .duration(500)
                .attr("color", "#e06d08");              
        });

        r.on("mouseout", function(d){
            d3.select(this).select("rect").transition()
                .duration(500)
                .attr("color", "#ffa354");
        });

        r.append("text")
            .attr("text-anchor", "middle")
            .attr("x", 400)
            .attr("y", function(d){return d.iy})
            .style("font-size", "30px")
            .style('fill', 'white')
            .style('font-family', 'Helvetica')
            .text(function(d){return d.name});

There are several posts asking the same questions, but involve different issues. My code doesn't append text directly to the desired shape like this or this or this, and there are no errors that pop up in the console debugger.

All help is much appreciated! Thank you in advance!

Edit: Sorry, it looks like I took an earlier version of the code. I tried appending to the "g" element (after seeing the other posts) AND to the "rect" element (previously).

Update: It turns out the selection (maybe in conjunction with the incorrect appending) did it, as was described in the accepted answer. Thank you so much!

Answer 1

r.on("mouseover", function(d){
            d3.select(this).select("rect").transition()
                .duration(500)
                .attr("color", "#e06d08");              
        });

The selections were correct except that d3.select(this) selects the rectangle, so no need for .select("rect") after. Instead of using the .attr("color", "..."), you have to use .style("fill", "..."). Same thing for 'mouseout' as well. Working snippet below.

edit: The reason labels aren't showing up is because you are appending them to the rect. Instead they should be in the g element along with the rect. Updated the snippet.

var w = 1000;
        var h = 1000;

        var svgBody = d3.select("body").append("svg")
            .attr("width", w)
            .attr("height", h);

        var contributors = [{name: "a", iy: 30}, 
            {name: "b", iy: 60},
            {name: "c", iy: 90},
            {name: "d", iy: 120}];


        var r = svgBody.selectAll(".rect").data(contributors)
            .enter()
            .append("g")
                .attr("class", "rect");
            r.append("rect")
                .attr("width", 90)
                .attr("height", 20)
                .style("fill", "#db8215")
                .attr("stroke", "black")
                .attr("x", 400)
                .attr("y", function(d){return d.iy});


        //Mouse behaviors
        //Mouseover - it turns slightly lighter
        r.on("mouseover", function(d){
            d3.select(this).select('rect').transition()
                .duration(500)
                .style("fill", "#e06d08");              
        });

        r.on("mouseout", function(d){
            d3.select(this).select('rect').transition()
                .duration(500)
                .style("fill", "#ffa354");
        });

        r.append("text")
        		.attr('class', 'text')
            .attr("text-anchor", "middle")
            .attr("x", 400)
            .attr("y", function(d){return d.iy})
            .style("font-size", "30px")
            .style('fill', 'white')
            .style('font-family', 'Helvetica')
            .text(function(d){
            	return d.name
             });

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