Javascript 将日期对象插入json
我有这个Javascript 将日期对象插入json,javascript,json,date,amcharts,Javascript,Json,Date,Amcharts,我有这个json,我需要使用amCharts折线图 var chartData = [{ date: "2009/10/2", value: 5, name: 5 }, { date: "2009/10/3", value: 15, name: 5 }, { date: "2009
json
,我需要使用amCharts
折线图
var chartData = [{
date: "2009/10/2",
value: 5,
name: 5
}, {
date: "2009/10/3",
value: 15,
name: 5
}, {
date: "2009/10/4",
value: 13,
name: 10
}, {
date: "2009/10/5",
value: 17,
name: 30
}, {
date: "2009/10/6",
value: 15,
name: 5
}, {
date: "2009/10/7",
value: 19,
name: 5
}];
为了与amCharts
兼容,我需要将日期值指定为日期对象,因此我通过以下函数进行了指定:
function parseDate(){
for( var i = 0; i < chartData.length; ++i ) {
var dateArray = chartData[i]["date"].split("/");
chartData[i]["date"] = new Date(Number(dateArray[0]), Number(dateArray[1])-1, Number(dateArray[2]));
window.alert(chartData[i]["date"]);//for debugging purposes
}
return chartData;
}
图表显示出来了,请帮我做这个
非常感谢:)
编辑:生成图形的代码(仅供参考)
试试这个:
function parseDate() {
for( var i = 0; i < chartData.length; ++i )
chartData[i]["date"] = new Date(chartData[i]["date"]);
return chartData;
}
函数parseDate(){
对于(变量i=0;i
如果你硬编码chartData[i][“date”]=new date(2009,10,7)
会发生什么情况?结果相同..我像new date(2010,10,i)
那样做了,但仍然是一个空图..现在我想知道我生成的图中的cde有什么问题…但是如果我直接用日期对象传递json,效果很好,如图所示:(@mrcode尽管我很希望这样做,但我还是得到了同样的结果..还有空图表:(但谢谢你的回答:)我不知道这是否会有什么不同,但你能试试chartData[i].date=new date(chartData[i].date)
?嘿…谢谢你..你工作了..甚至我的也工作了..我想是浏览器出了问题..谢谢你的帮助:):)@PulkitGoyal:我按照你的代码,使用了你的parseDate()方法,但我仍然没有正确地获取图表。我正在动态地传递值。@PulkitGoyal:忘记在我之前的评论中添加内容,我正在使用IE8。
AmCharts.ready(function () {
parseDate();
// SERIAL CHART
chart = new AmCharts.AmSerialChart();
chart.pathToImages = "../amcharts/images/";
chart.zoomOutButton = {
backgroundColor: '#000000',
backgroundAlpha: 0.15
};
chart.dataProvider = chartData;
chart.categoryField = "date";
// listen for "dataUpdated" event (fired when chart is inited) and call zoomChart method when it happens
chart.addListener("dataUpdated", zoomChart);
// AXES
// category
var categoryAxis = chart.categoryAxis;
categoryAxis.parseDates = true; // as our data is date-based, we set parseDates to true
categoryAxis.minPeriod = "DD"; // our data is daily, so we set minPeriod to DD
categoryAxis.dashLength = 2;
categoryAxis.gridAlpha = 0.15;
categoryAxis.axisColor = "#DADADA";
var i = 0;
for (var key in chartData[0]) {
if (key != 'date') {
var valueAxis = new AmCharts.ValueAxis();
valueAxis.offset = i * 40;
valueAxis.dashLength = 4;
valueAxis.axisColor = "#FF6600";
valueAxis.axisAlpha = 0;
chart.addValueAxis(valueAxis);
// GRAPH
var graph = new AmCharts.AmGraph();
graph.valueAxis = valueAxis; // we have to indicate which value axis should be used
graph.type = "line";
graph.title = "infection # " + i;
graph.valueField = key;
graph.customBullet = "images/star.gif"; // bullet for all data points
graph.bulletSize = 14; // bullet image should be a rectangle (width = height)
graph.customBulletField = "customBullet"; // this will make the graph to display custom bullet (red star)
chart.addGraph(graph);
}
i = i + 1;
}
// CURSOR
var chartCursor = new AmCharts.ChartCursor();
chartCursor.cursorPosition = "mouse";
chart.addChartCursor(chartCursor);
// SCROLLBAR
var chartScrollbar = new AmCharts.ChartScrollbar();
chart.addChartScrollbar(chartScrollbar);
// LEGEND
var legend = new AmCharts.AmLegend();
legend.marginLeft = 110;
chart.addLegend(legend);
// WRITE
chart.write("chartdiv");
});
function parseDate() {
for( var i = 0; i < chartData.length; ++i )
chartData[i]["date"] = new Date(chartData[i]["date"]);
return chartData;
}