添加陰影chart.js之

Question

我使用chart.js之的最後一個版本，我想陰影添加到每個酒吧

這裏的代碼

<canvas id="myChart" width="400" height="400"></canvas> 

<script> var ctx = document.getElementById("myChart").getContext('2d'); 
var myChart = new Chart(ctx, { 
type: 'bar', 
data: { labels: ["Red", "Blue", "Yellow", "Green", "Purple", "Orange"], 
datasets: [{ label: '# of Votes', data: [12, 19, 3, 5, 2, 3], 
backgroundColor: [ 'rgba(255, 99, 132, 0.2)', 'rgba(54, 162, 235, 0.2)', 'rgba(255, 206, 86, 0.2)', 'rgba(75, 192, 192, 0.2)', 'rgba(153, 102, 255, 0.2)', 'rgba(255, 159, 64, 0.2)' ], borderColor: [ 'rgba(255,99,132,1)', 'rgba(54, 162, 235, 1)', 'rgba(255, 206, 86, 1)', 'rgba(75, 192, 192, 1)', 'rgba(153, 102, 255, 1)', 'rgba(255, 159, 64, 1)' ], borderWidth: 1 }] }, options: { scales: { yAxes: [{ ticks: { beginAtZero:true } }] } } }); </script> 

Answer 1

一個例子這將爲工作折線圖。

[編輯...]

Chart.types.Line.extend({ 
 
    name: "LineAlt", 
 
    initialize: function() { 
 
    Chart.types.Line.prototype.initialize.apply(this, arguments); 
 

 
    var ctx = this.chart.ctx; 
 
    var originalStroke = ctx.stroke; 
 
    ctx.stroke = function() { 
 
     ctx.save(); 
 
     ctx.shadowColor = '#000'; 
 
     ctx.shadowBlur = 10; 
 
     ctx.shadowOffsetX = 8; 
 
     ctx.shadowOffsetY = 8; 
 
     originalStroke.apply(this, arguments) 
 
     ctx.restore(); 
 
    } 
 
    } 
 
}); 
 

 
var data = { 
 
    labels: ["Red", "Blue", "Yellow", "Green", "Purple", "Orange"], 
 
    datasets: [ 
 
    { 
 
     fillColor: "rgba(255, 99, 132, 0.2)", 
 
     strokeColor: "rgba(54, 162, 235, 0.2)", 
 
     pointColor: "rgba(255, 206, 86, 0.2)", 
 
     pointStrokeColor: "#fff", 
 
     pointHighlightFill: "#fff", 
 
     pointHighlightStroke: "rgba(75, 192, 192, 0.2)", 
 
     data: [12, 19, 3, 5, 2, 3] 
 
    } 
 
    ] 
 
}; 
 

 
var ctx = document.getElementById("myChart").getContext("2d"); 
 
var canvas = new Chart(ctx).LineAlt(data, { 
 
    datasetFill: false 
 
});

<script src="https://cdnjs.cloudflare.com/ajax/libs/Chart.js/1.0.2/Chart.min.js"></script> 
 
<canvas id="myChart" width="600" height="300"></canvas>

感激，如果有用