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JavaScript

Posted by Austin Harms
Austin Harms
8,680 Points

Trouble removing chart dataset using ChartJS

I can't figure this out for the life of me. I have a chart using ChartJS and I'm wanting to turn different datasets on and off. The first step for this is to just remove one set of chart data when clicking on a button. It seems logical to me to select the second dataset object in the datasets array then remove it, but I can't get it to work. My code is below.

var line = document.getElementById("lineChart");

var myLineChart = new Chart(line, {
    type: 'line',
    data: {
        labels: ["16-22", "23-29", "30-5", "6-12", "13-19", "20-26", "27-3", "4-10", "11-17", "18-24", "25-31"],
        datasets: [
            {
                label: "My First dataset",
                fill: true,
                lineTension: 0.1,
                backgroundColor: "rgba(116,119,191,0.2)",
                borderColor: "rgba(116,119,191,1)",
                borderCapStyle: 'butt',
                borderDash: [],
                borderDashOffset: 0.0,
                borderJoinStyle: 'miter',
                pointBorderColor: "rgba(116,119,191,1)",
                pointBackgroundColor: "#fff",
                pointBorderWidth: 1,
                pointHoverRadius: 5,
                pointHoverBackgroundColor: "rgba(75,192,192,1)",
                pointHoverBorderColor: "rgba(220,220,220,1)",
                pointHoverBorderWidth: 2,
                pointRadius: 6,
                pointHitRadius: 10,
                data: [750, 1250, 1000, 1500, 2000, 1500, 1750, 1250, 1750, 2250, 1750, 2250],
                spanGaps: false,         
            },
            {
                label: "My Second dataset",
                fill: true,
                lineTension: 0.1,
                backgroundColor: "rgba(116,119,191,0.2)",
                borderColor: "rgba(116,119,191,1)",
                borderCapStyle: 'butt',
                borderDash: [],
                borderDashOffset: 0.0,
                borderJoinStyle: 'miter',
                pointBorderColor: "rgba(116,119,191,1)",
                pointBackgroundColor: "#fff",
                pointBorderWidth: 1,
                pointHoverRadius: 5,
                pointHoverBackgroundColor: "rgba(75,192,192,1)",
                pointHoverBorderColor: "rgba(220,220,220,1)",
                pointHoverBorderWidth: 2,
                pointRadius: 6,
                pointHitRadius: 10,
                data: [1750, 250, 7000, 1100, 1000, 1300, 750, 1550, 1350, 2650, 750, 2550],
                spanGaps: false,
            },   
        ],
  },
    options: {
         responsive: true,
         maintainAspectRatio: false, 
        }
});

var secondChart = myLineChart.data.datasets[1];


//Click button to remove second dataset
$('#hourlyBtn').on("click", function(){
    $(secondChart).remove();
});

1 Answer

Jacob Mishkin
Jacob Mishkin
23,118 Points
Jacob Mishkin
Jacob Mishkin
23,118 Points

sorry but I have really used chartJs before, but Here is the documentation, maybe that will help:

ChartJs