Question

如何在chartJs中传递值，其中我有一个来自我的data.php文件的json结果

我的Json

   [  
     {  
      "Login_Funnel":"6",
      "Playlist_Funnel_1":"1",
      "Logout_Funnel_2":"0"
   } 
  ]

在ChartJS脚本中就像

   $(document).ready(function() {
                new Chart($("#chart"), {
                    type: 'bar',
                    data: {
                        labels: ["Beta Value", "Charlie Value", "Delta Value"],
                        datasets: [{
                            label: 'Awesome Dataset',
                            data: [ 302, 175, 50],
                            backgroundColor: "rgba(75, 192, 192, 1)"
                        }]
                    },
}
}

我需要将值替换为

标签：[“Login_Funnel”，“Playlist_Funnel_1”，“Logout_Funnel_2”]

和

数据：[6,1,0]

由于我是chartjs的新手，我们将不胜感激

提前谢谢

Answer 1

你可以通过data.php遍历json返回并在options对象上设置数据，请检查jsfiddle

$(document).ready(function() {
    var options = {
        type: 'bar',
        data: {
          labels: ["Beta Value", "Charlie Value", "Delta Value"],
          datasets: [{
            label: 'Awesome Dataset',
            data: [ 302, 175, 50],
            backgroundColor: "rgba(75, 192, 192, 1)"
          }]
        }
    };

   var chart = new Chart($("#chart"), options);

   var data = [  
         {  
          "Login_Funnel":"6",
          "Playlist_Funnel_1":"1",
          "Logout_Funnel_2":"0"
       } 
      ];

    options.data.labels = []; //reset the labels
    options.data.datasets = [{
        label: 'Awesome Dataset',
        data: [],
        backgroundColor: "rgba(75, 192, 192, 1)"
    }]; // reset the previous data

    for (var i in data) { // iterate the data array    
        for (var y in data[i]) { //iterate the object
            if (i == 0) {
                options.data.labels.push(y);
            }
            options.data.datasets[i].data.push(data[i][y]);
        }
    }

    chart.update(); // update the chart with the new data
});

如何在Chart js中绘制Json数据

1 个答案: