javascript – 如何为NVD3图表设置工具提示的样式？

引用NVD3框架.我正在尝试为下面列出的饼图添加自定义工具提示：

var app = angular.module('plunker', ['nvd3']);

app.controller('MainCtrl', function($scope) {
  $scope.options = {
        chart: {
            type: 'pieChart',
            height: 500,
            x: function(d){return d.key;},
            y: function(d){return d.y;},
            color:['#CE1B1F', '#FFC455', '#00A6CD'],
            showLabels: false,
            duration: 500,
            labelThreshold: 0.01,
            labelSunbeamLayout: true,
            legend: {
                margin: {
                    top: 5,
                    right: 35,
                    bottom: 5,
                    left: 0
                }
            }
        }
    };

    $scope.data = [
        {
            key: "A",
            y: 2
        },
        {
            key: "B",
            y: 1
        },
        {
            key: "C",
            y: 3
        },
    ];
});

由于我只是使用Krispo的[github] [1]中的示例,我不确定如何自定义工具提示,使其类似于以下内容：

解决方法:

要添加自定义工具提示,您需要将工具提示添加到现有的nvd3选项,如下所示：

tooltip: {
     contentGenerator: function (e) {
           //Create and return desired tool-tip as html using e.series and e.data
     }
}

如果你需要为每个系列使用一些额外的值或属性,你可以在$scope.data中定义它们：

$scope.data = [
        {
            key: "CAT I",
            y: 2,
            MyAttribute1:"DLA Avn ... CAT I",
            MyAttribute2:"DLA Energy ... CAT I"
        },
        {
            key: "CAT II",
            y: 3,
            MyAttribute1:"DLA Avn ... CAT II",
            MyAttribute2:"DLA Energy ... CAT II"
        },
        {
            key: "CAT III",
            y: 1,
            MyAttribute1:"DLA Avn ... CAT III",
            MyAttribute2:"DLA Energy ... CAT III"
        },
    ];

现在您可以使用e.data访问工具提示函数中的自定义值,如下所示：

tooltip: {
         contentGenerator: function (e) {
              var series = e.series[0];
              if (series.value === null) return;

              var rows = 
                "<tr>" +
                  "<td class='key'>" + series.key + '- #3: ' + "</td>" +
                  "<td class='x-value'>" + e.data.MyAttribute1 + "</td>" + 
                "</tr>" +
                "<tr>" +
                  "<td class='key'>" + series.key + '- #5: ' + "</td>" +
                  "<td class='x-value'>" + e.data.MyAttribute2 + "</td>" + 
                "</tr>";

              var header = 
                "<thead>" + 
                  "<tr>" +
                    "<td class='legend-color-guide'><div style='background-color: " + series.color + ";'></div></td>" +
                    "<td class='key'><strong>" + series.key + "</strong></td>" +
                  "</tr>" + 
                "</thead>";

              return "<table>" +
                  header +
                  "<tbody>" + 
                    rows + 
                  "</tbody>" +
                "</table>";
            } 
}

有一个Edited Plunker向您展示如何做到这一点.

希望有所帮助.

标签：javascript,angularjs,d3-js,nvd3-js
来源： https://codeday.me/bug/20190608/1199971.html