选择G元素中的路径并更改样式

基本上我试图让所有的路径除了一个被翻转为灰色的路径,而被选中的路径保持它的原始颜色.我已经能够将所有其他路径变为灰色,但是我遇到了"select.this"功能的问题并且实际上访问了我想要改变样式的路径.看来我实际上已经设法进入g组中的path元素,但是我在控制台中遇到错误

Uncaught TypeError: Property 'style' of object # is not a function

相关代码:

    svg.selectAll("g.team")
    .on("mouseover",function(){
            console.log("I see you!");
            var lineName;
            var accuracy = 10;

            svg.selectAll("path.team.line").style("stroke","#C0C0C0"); 
            //set all to gray

            var selectedArray = d3.select(this);
            console.log(selectedArray);

            var selectGroup = selectedArray[0];
            console.log("should be group:"+selectGroup);

            var selectedLine = selectGroup[0];;

            selectedLine.style("color",function(d){  //let active keep color
            lineName = abbrDict[d.name];  //full name to be at end of line
            return color(d.name);
        });

            //get position of end of line
        var len = d3.select(this).children().node().getTotalLength();
        var pos = d3.select(this).node().getPointAtLength(len);  
        //append text to end of line
        svg.append("text")
            .attr("id","tooltip")
            .attr("x",pos.x-55)
            .attr("y",pos.y)
            .text(lineName)
            .style("font-family","sans-serif")
            .style("font-size",13);

            this.parentNode.parentNode.appendChild(this.parentNode); 
            //brings team to front, must select the path's g parent 
            //to reorder it 

    })
    .on("mouseout",function(){
            d3.select("#tooltip").remove();

            d3.selectAll("team").selectAll("path")
              .transition()
              .style("stroke",function(d){
                  return color(d.name);  //return all the colors
               });

            d3.selectAll("axis").selectAll("line").style("color","black");

    });

谢谢,麻烦您了!