3 html javascript google-visualization event-handling
我正在我的一个项目中忙于使用Google Charts在表格中显示数据.一切都很好.除非我需要查看用户点击按钮后选择的行.
显然这可以通过Javascript来完成,但我已经苦苦挣扎了好几天无济于事.下面我粘贴了一个表的简单示例的代码,以及我想要使用的Javascript函数(这不起作用).
<html>
<head>
<script type='text/javascript' src='https://www.google.com/jsapi'></script>
<script type='text/javascript'>
google.load('visualization', '1', {packages:['table']});
google.setOnLoadCallback(drawTable);
var table = "";
function drawTable() {
var data = new google.visualization.DataTable();
data.addColumn('string', 'Name');
data.addColumn('number', 'Salary');
data.addColumn('boolean', 'Full Time Employee');
data.addRows(4);
data.setCell(0, 0, 'Mike');
data.setCell(0, 1, 10000, '$10,000');
data.setCell(0, 2, true);
data.setCell(1, 0, 'Jim');
data.setCell(1, 1, 8000, '$8,000');
data.setCell(1, 2, false);
data.setCell(2, 0, 'Alice');
data.setCell(2, 1, 12500, '$12,500');
data.setCell(2, 2, true);
data.setCell(3, 0, 'Bob');
data.setCell(3, 1, 7000, '$7,000');
data.setCell(3, 2, true);
table = new google.visualization.Table(document.getElementById('table_div'));
table.draw(data, {showRowNumber: true});
}
function selectionHandler() {
selectedData = table.getSelection();
row = selectedData[0].row;
item = table.getValue(row,0);
alert("You selected :" + item);
}
</script>
</head>
<body>
<div id='table_div'></div>
<input type="button" value="Select" onClick="selectionHandler()">
</body>
</html>
提前感谢任何花时间看这个的人.老实说我真的很努力,希望那里有人可以帮助我.
这是一个工作版本.
没有选择事件的监听器,你混淆了,data并且table进行了getValue呼叫.
<html>
<head>
<script src='https://www.google.com/jsapi'></script>
<script>
google.load('visualization', '1', {packages:['table']});
google.setOnLoadCallback(drawTable);
var table, data;
function drawTable() {
data = new google.visualization.DataTable();
data.addColumn('string', 'Name');
data.addColumn('number', 'Salary');
data.addColumn('boolean', 'Full Time Employee');
data.addRows(4);
data.setCell(0, 0, 'Mike');
data.setCell(0, 1, 10000, '$10,000');
data.setCell(0, 2, true);
data.setCell(1, 0, 'Jim');
data.setCell(1, 1, 8000, '$8,000');
data.setCell(1, 2, false);
data.setCell(2, 0, 'Alice');
data.setCell(2, 1, 12500, '$12,500');
data.setCell(2, 2, true);
data.setCell(3, 0, 'Bob');
data.setCell(3, 1, 7000, '$7,000');
data.setCell(3, 2, true);
table = new google.visualization.Table(document.getElementById('table_div'));
table.draw(data, {showRowNumber: true});
//add the listener
google.visualization.events.addListener(table, 'select', selectionHandler);
}
function selectionHandler() {
var selectedData = table.getSelection(), row, item;
row = selectedData[0].row;
item = data.getValue(row,0);
alert("You selected :" + item);
}
</script>
</head>
<body>
<div id='table_div'></div>
<input type="button" value="Select" onClick="selectionHandler()">
</body>
</html>