[英]Google Charts error with IE11 emulator for IE8
我知道在使用Google Visualization API將圖表添加到網頁時,IE11中的IE8模擬器會導致“ 權限被拒絕”錯誤。
但是,在我正在開發的網站上,有很多頁面使用圖表,並且我注意到此錯誤僅在某些頁面上發生。 在進一步的研究中,我發現僅在調用用於使用for循環渲染圖形的函數時發生錯誤(下面的代碼示例)。 還引起我注意的是,這導致工具提示停止在Google Chrome中運行。
我可以通過在for循環外依次手動調用每個函數來解決此問題,當我只需要渲染少量圖形(在下面的示例中為5個)時,這很好,但是對於大量圖表卻不實用。
有人可以說明使用for循環時出現此問題的原因,是否有解決方法,這意味着我不必手動多次調用同一函數。
非常感謝您的任何幫助。
// This code does not work at all in IE11 emulator mode for IE8
// and tool tips only work for the last rendered graph in Chrome Version 33.0.1750.117 m
for ( i = 0; i < fibreCounts.length; i++ ) {
var divName = fibreCounts[i] + '_forecast_order_graph';
var containerDiv = document.getElementById('forecast_order_graphs').innerHTML;
document.getElementById('forecast_order_graphs').innerHTML = containerDiv + '<div id="' + divName + '" class="bar_chart_div" ></div>';
createLineGraph( fibreOrderData[i], divName, fibreCounts[i], maxDates[i], poCover[fibreCounts[i]] );
}
// This code where the call to the function that renders the graph is outside
// the for loop works fine in both cases
for ( i = 0; i < fibreCounts.length; i++ ) {
var divName = fibreCounts[i] + '_forecast_order_graph';
var containerDiv = document.getElementById('forecast_order_graphs').innerHTML;
document.getElementById('forecast_order_graphs').innerHTML = containerDiv + '<div id="' + divName + '" class="bar_chart_div" ></div>';
}
createLineGraph( fibreOrderData[0], '8f_forecast_order_graph', '8f', maxDates[0], poCover['8f'] );
createLineGraph( fibreOrderData[1], '24f_forecast_order_graph', '24f', maxDates[1], poCover['24f'] );
createLineGraph( fibreOrderData[2], '48f_forecast_order_graph', '48f', maxDates[2], poCover['48f'] );
createLineGraph( fibreOrderData[3], '96f_forecast_order_graph', '96f', maxDates[3], poCover['96f'] );
createLineGraph( fibreOrderData[4], '240f_forecast_order_graph', '240f', maxDates[4], poCover['240f'] );
// Function that renders the graphs
function createLineGraph( valuesArray, targetDiv, fCount, endDate, budgetAmount )
{
console.log( 'Start chart ' + fCount );
var chartData = new google.visualization.DataTable();
chartData.addColumn('string', 'Date');
chartData.addColumn('number', 'Budget');
chartData.addColumn('number', 'Order Requirement');
chartData.addColumn('number', 'Build Requirement');
var rowDate = Date.parse( 'January 1, 2013' );
var lastRowDate = endDate + ( 7 * 86400000 );
console.log( 'Budget : ' + budgetAmount );
while ( rowDate < lastRowDate ) {
var orderReq = 0;
var buildReq = 0;
var i;
for( i = 0; i < valuesArray.length; i++ ) {
if ( valuesArray[i][1] <= rowDate ) {
buildReq += valuesArray[i][0]
}
if ( valuesArray[i][2] <= rowDate ) {
orderReq += valuesArray[i][0]
}
}
var dateString = buildDateString( rowDate );
chartData.addRow( [dateString, budgetAmount, orderReq, buildReq] );
rowDate += 86400000;
}
var options = {
fontName: 'Arial',
fontSize: 12,
title : fCount + ' Forecast Order Report',
hAxis: {title: 'Date'},
vAxis: {title: 'Cable Length (m)', textStyle: {color: '#676767', fontName: 'Arial', fontSize: 12}},
}
var chart = new google.visualization.LineChart( document.getElementById( targetDiv ) );
chart.draw( chartData, options );
console.log( 'End chart ' + fCount );
}
在下面的數據示例中,大多數數據都是從SharePoint列表中提取的,因此,要生成這些數組需要處理大量負載。 這些示例數組應該足以測試代碼。
var poCover = { '8f' : 22000, '24f' : 80100, '48f' : 34400, '96f' : 64600, '240f' : 61300 };
var fibreCounts = [ '8f', '24f', '48f', '96f', '240f' ];
var maxDates = [ 1395014400000, 1395014400000, 1393545600000, 1392768000000, 1393545600000 ];
var fibreOrderData = [
[
[3374, 1395014400000, 1390176000000],
[70, 1376002800000, 1371164400000],
[80, 1376002800000, 1371164400000],
[3374, 1395014400000, 1390176000000],
[70, 1376002800000, 1371164400000],
[80, 1376002800000, 1371164400000]
],
[
[2313, 1395014400000, 1390176000000],
[1164, 1384387200000, 1379548800000],
[442, 1384387200000, 1379548800000],
[2313, 1395014400000, 1390176000000],
[1164, 1384387200000, 1379548800000],
[442, 1384387200000, 1379548800000]
],
[
[2900, 1393545600000, 1388707200000],
[1700, 1366153200000, 1361314800000],
[0, 1360886400000, 1356048000000],
[2900, 1393545600000, 1388707200000],
[1700, 1366153200000, 1361314800000],
[0, 1360886400000, 1356048000000]
],
[
[2700, 1392768000000, 1387929600000],
[8921, 1381791600000, 1376953200000],
[300, 1376953200000, 1372114800000]
[2700, 1392768000000, 1387929600000],
[8921, 1381791600000, 1376953200000],
[300, 1376953200000, 1372114800000]
],
[
[23020, 1393545600000, 1388707200000],
[23630, 1393545600000, 1388707200000],
[5800, 1393545600000, 1388707200000],
[23020, 1393545600000, 1388707200000],
[23630, 1393545600000, 1388707200000],
[5800, 1393545600000, 1388707200000]
]
];
您的for
循環的問題是這樣的:
document.getElementById('forecast_order_graphs').innerHTML = containerDiv + '<div id="' + divName + '" class="bar_chart_div" ></div>';
createLineGraph(fibreOrderData[i], divName, fibreCounts[i], maxDates[i], poCover[fibreCounts[i]]);
每次循環時,您都將容器的HTML內容作為字符串,追加新的div字符串,用新的字符串替換容器的HTML內容,並在新的div中繪制圖表。 這將從先前繪制的圖表復制SVG,但事件處理程序丟失到圖表,因此不會產生工具提示。
正確的方法是使用document.createElement方法創建新的div並將它們附加到容器div中:
var containerDiv = document.getElementById('forecast_order_graphs');
for ( i = 0; i < fibreCounts.length; i++ ) {
var divName = fibreCounts[i] + '_forecast_order_graph';
var newDiv = document.createElement('div');
newDiv.id = divName;
containerDiv.appendChild(newDiv);
createLineGraph(fibreOrderData[i], divName, fibreCounts[i], maxDates[i], poCover[fibreCounts[i]]);
}
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