[英]moment Uncaught TypeError: Cannot read property 'format' of undefined at time
[英]Uncaught TypeError: Cannot read property 'format' of undefined
我正在尝试在chartjs图表中设置数字格式。 我在控制台上收到此错误,并且图表上看不到数字
未捕获的TypeError:无法读取未定义的属性“格式”
您可以在这里参考小提琴。 小提琴上的第74行
for (var i = 0; i < firstDataSet.data.length; i++) {
var firstModel = firstDataSet._meta[Object.keys(firstDataSet._meta)[0]].data[i]._model;
var secondModel = secondDataSet._meta[Object.keys(secondDataSet._meta)[0]].data[i]._model;
var thirdModel = thirdDataSet._meta[Object.keys(thirdDataSet._meta)[0]].data[i]._model;
var fourthModel = fourthDataSet._meta[Object.keys(fourthDataSet._meta)[0]].data[i]._model;
var total = firstDataSet.data[i] + secondDataSet.data[i];
var total1 = thirdDataSet.data[i] + fourthDataSet.data[i];
// Line below is causing the error
ctx.fillText(formatter.format(Number(firstDataSet.data[i])) + " ", firstModel.x, firstModel.y + 20);
ctx.fillText((firstDataSet.data[i]) , firstModel.x, firstModel.y + 20);
ctx.fillText((secondDataSet.data[i] ) , secondModel.x, secondModel.y + 20);
ctx.fillText(total , secondModel.x, secondModel.y - 20);
ctx.fillText((thirdDataSet.data[i]) , thirdModel.x, thirdModel.y + 20);
ctx.fillText((fourthDataSet.data[i] ) , fourthModel.x, fourthModel.y + 20);
ctx.fillText(total1 , fourthModel.x, fourthModel.y - 20);
/*if (firstDataSet.data[i] >= secondDataSet.data[i]) {
ctx.fillText((firstDataSet.data[i] * 100 / total).toFixed(2) + '%', firstModel.x, firstModel.y + 30);
} else {
ctx.fillText((secondDataSet.data[i] * 100 / total).toFixed(2) + '%', secondModel.x, secondModel.y + 30);
}
*/
}
var formatter = new Intl.NumberFormat('en-US', {
style: 'currency',
currency: 'USD',
minimumFractionDigits: 2,
// the default value for minimumFractionDigits depends on the currency
// and is usually already 2
});
您必须在调用new Chart
构造函数之前声明formatter
,否则它将在您作为new Chart
的第二个参数传递的options
内undefined
。
var formatter = new Intl.NumberFormat('en-US', {
style: 'currency',
currency: 'USD',
minimumFractionDigits: 2,
// the default value for minimumFractionDigits depends on the currency
// and is usually already 2
});
window.myBar = new Chart(ctx, {
type: 'bar',
data: data,
options: options
});
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