Amchart圖表向下鑽取工作正常，但後退按鈕不起作用

-1

<!DOCTYPE> 

<html> 
<head> 
<script src="https://www.amcharts.com/lib/3/amcharts.js"></script> 
<script src="https://www.amcharts.com/lib/3/serial.js"></script> 
<script src="https://www.amcharts.com/lib/3/themes/light.js"></script> 
<script src="https://www.amcharts.com/lib/3/amstock.js"></script> 

</head> 


<body> 
<div id="chartdiv" style="width: 100%; height: 355px;"></div> 

<script> 
var chart; 

var chartData = [{ 
    country: "Somaliland", 
    visits: 4025, 
    "allLabels": [{ 
     "text": "", 
     "x": 10, 
     "y": 15, 
     "url": "#" 
    }], 

    subdata: [ 
     { country: "Gabiley", visits: 1000, subdata: [ 
     { country: "Arabsiyo", visits: 1000 }, 
     { country: "Gabilay", visits: 785 }, 
     { country: "Wajale", visits: 1000 }, 

    ] }, 
     { country: "Sanaag", visits: 785, subdata: [ 
     { country: "Ceeri Gaabo", visits: 1000 }, 


    ] }, 
     { country: "M.Jeex", visits: 501, subdata: [ 
     { country: "Hargeysa", visits: 1000 }, 


    ] } 

    ]}, 
{ 
    country: "Puntland", 
    visits: 3882, 
    subdata: [ 
     { country: "Bari", visits: 1000, subdata: [ 
     { country: "BOSASO", visits: 500 }, 
     { country: "Balibusle", visits: 785 }, 


    ] }, 
     { title : "title1", 
     country: "Mudug", visits: 785, subdata: [ 
     { country: "Sheerbi", visits: 1000 }, 
      { country: "Ufayn", visits: 1000 }, 



    ] } 


    ] 

    }, 

]; 


AmCharts.ready(function() { 
    // SERIAL CHART 
    chart = new AmCharts.AmSerialChart(); 
    chart.dataProvider = chartData; 
    chart.categoryField = "country"; 
    chart.startDuration = 0; 

    // AXES 
    // category 
    var categoryAxis = chart.categoryAxis; 
    categoryAxis.labelRotation = 0; 
    categoryAxis.gridPosition = "start"; 

    // value 
    // in case you don't want to change default settings of value axis, 
    // you don't need to create it, as one value axis is created automatically. 
    // GRAPH 
    var graph = new AmCharts.AmGraph(); 
    graph.valueField = "visits"; 
    graph.balloonText = "[[category]]: [[value]]"; 
    graph.titleField = "title"; 
    graph.type = "column"; 
    graph.lineAlpha = 0; 
    graph.fillAlphas = 0.8; 
    chart.addGraph(graph); 
    chart.angle = 30; 
chart.depth3D = 15; 


chart.drillLevels = [{ 
    "title": "Average Revenue Per User", 
    "data": chartData 
}]; 

    chart.addListener("clickGraphItem", function (event) { 
     // let's look if the clicked graph item had any subdata to drill-down into 
     if (event.item.dataContext.subdata != undefined) { 
      // wow it has! 
      // let's set that as chart's dataProvider 


    // replace data 


    // replace title 



    // add back link 
    // let's add a label to go back to yearly data  



    // add back link 
    // let's add a label to go back to yearly data 
       event.chart.addLabel(
     0, 25, 
     "<<< Go back", 
     undefined, 
     undefined, 
     undefined, 
     undefined, 
     undefined, 
     undefined, 
     'javascript:drillUp();'); 


      event.chart.dataProvider = event.item.dataContext.subdata; 
      event.chart.validateData(); 

     } 

      event.chart.allLabels[0].text = "Go Back " + event.chart.title[0].text; 
    }); 


    chart.write("chartdiv"); 

}); 

function drillUp() { 

    // get level 
    chart.drillLevels.pop(); 
    var level = chart.drillLevels[chart.drillLevels.length - 1]; 

    // replace data 
    chart.dataProvider = level.data; 

    // replace title 
    chart.titles[0].text = level.title; 

    // remove labels 
    if (chart.drillLevels.length === 1) 
    chart.clearLabels(); 

    // take in data and animate 
    chart.validateData(); 
    chart.animateAgain(); 
} 


</script> 

</body> 



</html>

我粘貼了上面的代碼。當我運行圖形時，它可以正常工作，但後退按鈕不起作用。Amchart圖表向下鑽取工作正常，但後退按鈕不起作用

當控制檯它說「TypeError：event.chart.title is undefined」。

來源

2016-05-11 Pkh_stayHunger

由於錯誤消息明確指出，屬性chart.title不存在。

所以你只需要再次查找該docs或使用控制檯，看看有什麼chart對象確實包含什麼可能是在那裏標題...

這樣，我現在知道你只需要使用chart.titles[0]而不是chart.title[0]！

來源

2016-05-11 10:27:19 CherryDT

嗨，謝謝你的回覆。但它仍然沒有工作。 –

什麼是「不工作的意思」？怎麼了？ – CherryDT

即使在將chart.title [0]更改爲chart.titles [0]後，後退按鈕仍然不適用。 –

Amchart圖表向下鑽取工作正常，但後退按鈕不起作用

回答

相關問題