我正在使用AmCharts进行股票相关事件。我在控制台窗口中遇到奇怪的错误。
Uncaught TypeError: Cannot read property 'mouseX' of undefined
at b.followCursor (amcharts.js:271)
at b.showBalloonReal (amcharts.js:130)
at amcharts.js:130
我的代码如下:
-我使用此功能将数据填充到aspxEventData变量中。
function getCompanyEventChartData() {
var jqhx = $.ajax({
type: "GET",
data: { 'marketID': '@Model.MarketID', 'companyID': '@Model.CompanyID' },
url: "@Url.CompanyChartEvent()"
})
.done(function (data) {
for (var i = 0; i < data.length; i++) {
if (data[i][1] == "31") {
var e0 = {
date: new Date(data[i][0]),
type: "sign",
backgroundColor: "#85CDE6",
graph: closeGraph,
text: "D",
description: "temporary",
url: "https://www.google.com/",
urlTarget: "_blank"
};
dividendEventData.push(e0);
}
}
});
股息事件数据采用这种格式。
[["Sunday, 18, Dec, 2016",31],["Thursday, 24, Dec, 2015",31],["Thursday, 11, Dec, 2014",31],["Thursday, 19, Dec, 2013",31],["Saturday, 22, Dec, 2012",31],["Saturday, 24, Dec, 2011",31],["Tuesday, 22, Feb, 2011",31],["Tuesday, 19, Jan, 2010",31],["Saturday, 29, Nov, 2008",31],["Wednesday, 20, Feb, 2008",31],["Tuesday, 27, Feb, 2007",31],["Monday, 28, Mar, 2005",31]]
然后,我将股息事件数据添加到我的图表中,如下所示。
simpleDataSet.stockEvents = dividendEventData;
setTimeout(function () {
$("#chartcurtain").hide();
chart.validateData();
}, 1000);
我的图表如下所示。
Chart Image
我的图表可以正常运行一次并显示说明。但是在下一次重新加载后,当我将鼠标悬停在事件图标上时,它不会显示说明,并且会出现我在控制台中前面提到的错误。我已经删除了Cookie,并验证了从ajax调用返回的数据始终是相同的。我遵循了this stackoverflow thread,但仍然是相同的错误。
最佳答案
首次初始化图表时,它期望data / config为JavaScript对象和数组。然后,它将简单的JS对象转换为适当类的实例。
对于股票事件,它将对象的stockEvents
数组转换为StockEvent
实例的数组。
这就是图表第一次起作用的原因。
现在,当您向已初始化的图表添加事件时,基本上是在向stockEvents
数组添加基本对象。现在,当您这样做时,最终将得到混合的StockEvent
实例和基本对象组成的数组。
这次对象没有转换为StockEvent
实例,因此异常。
您需要做的是将一个新事件实例化为StockEvent
,然后将该实例推送到stockEvents
中。
像这样:
var e0 = new AmCharts.StockEvent();
e0.date = new Date(data[i][0]);
e0.type = "sign";
e0.backgroundColor = "#85CDE6";
e0.graph = closeGraph;
e0.text = "D";
e0.description = "temporary";
e0.url = "https://www.google.com/";
e0.urlTarget = "_blank";
dividendEventData.push(e0);
那应该照顾它。
这是一个工作示例:
var chart = AmCharts.makeChart("chartdiv", {
"type": "stock",
"theme": "light",
"categoryAxesSettings": {
"minPeriod": "mm"
},
"dataSets": [
{
"fieldMappings": [
{
"fromField": "value",
"toField": "value"
}
],
"dataProvider": generateChartData(),
"categoryField": "date"
}
],
"panels": [
{
"stockGraphs": [
{
"valueField": "value",
"type": "smoothedLine"
}
]
}
],
"chartCursorSettings": {
"valueBalloonsEnabled": true
}
});
function generateChartData() {
var chartData = [];
var firstDate = new Date(2012, 0, 1);
firstDate.setDate(firstDate.getDate() - 1000);
firstDate.setHours(0, 0, 0, 0);
for (var i = 0; i < 1000; i++) {
var newDate = new Date(firstDate);
newDate.setHours(0, i, 0, 0);
var a = Math.round(Math.random() * (40 + i)) + 100 + i;
chartData.push({
date: newDate,
value: a
});
}
return chartData;
}
function test() {
var dividendEventData = [];
for (var i = 0; i < 5; i++) {
var r = Math.floor(Math.random() * 1000);
var e0 = new AmCharts.StockEvent();
e0.date = new Date(chart.dataSets[0].dataProvider[r].date);
e0.type = "sign";
e0.backgroundColor = "#85CDE6";
e0.graph = chart.panels[0].stockGraphs[0];
e0.text = "D";
e0.description = "temporary";
e0.url = "https://www.google.com/";
e0.urlTarget = "_blank";
dividendEventData.push(e0);
}
chart.dataSets[0].stockEvents = dividendEventData;
chart.validateData();
}
#chartdiv {
width: 100%;
height: 200px;
}
<script src="//www.amcharts.com/lib/3/amcharts.js"></script>
<script src="//www.amcharts.com/lib/3/serial.js"></script>
<script src="//www.amcharts.com/lib/3/themes/light.js"></script>
<script src="//www.amcharts.com/lib/3/amstock.js"></script>
<div id="chartdiv"></div>
<input type="button" value="add event" onclick="test();" />
这是相同的CodePen版本:
https://codepen.io/team/amcharts/pen/c37ef299206c6ab5a09c15b0f665e6f0?editors=0010