使用 Chart.js 更改折线图的标签字体颜色 [英] Change label font color for a line chart using Chart.js

问题描述

我正在使用 Chart.js 生成一些图表.折线图需要标签.我似乎想不出改变这些标签颜色的方法.

I'm using Chart.js to generate some charts. The line chart requires labels. I can't seem to figure out a way to change the color of those labels.

var chartGood = "rgba(50,182,93,0.5)";
var lineChartData = {
        labels : ["3/14","3/15","3/16","3/17","3/18","3/19","3/20","3/21","3/22","3/23"],
        datasets : [
            {
                fillColor : chartGood,
                strokeColor : "rgba(255,255,255,1)",
                pointColor : "rgba(50,182,93,1)",
                pointStrokeColor : "#fff",
                data : [12, 21, 28, 29, 31, 55, 52, 50, 49, 59]
            }
        ]
    }

var myLine = new Chart(document.getElementById("cpu-chart").getContext("2d")).Line(lineChartData);

我试过了:

labelColor : "#fff",

legend : {
    font : {
        color : "#fff"
    }
}

label : {
    font : {
        color : "#fff"
    }
}

还有其他一些组合，但似乎没有任何效果.我以为我在 docs

And a few other combinations but nothing seems to work. I thought I found what I was looking for in the docs

//String - Scale label font colour  
    scaleFontColor : "#fff",

但这也没有解决我的问题.

but that didn't solve my issue either.

推荐答案

是的，scaleFontColor 选项会更改标签的颜色.

Yes, the scaleFontColor option changes the color of labels.

您可能尝试将其添加到数据对象中，这就是它不起作用的原因.实际上它应该作为 Line 函数的第二个参数传递，如下所示:

You probably tried to add it to the data object, that's why it didn't work. Actually it should be passed as a second parameter of the Line function like this:

var myLine = new Chart(document.getElementById("cpu-chart").getContext("2d"))
    .Line(lineChartData, { scaleFontColor: "#ff0000" });

同样，要更改字体大小，请使用 scaleFontSize.

Similarly, to change the font size use scaleFontSize.

示例:

scaleFontSize: 16

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