[英]'undefined is not a function' with google charts when using JSON
我有一些JSON數據,想嘗試Google圖表。 我從這里和這里使用了文檔中的示例
<head>
<!--Load the AJAX API-->
<script type="text/javascript" src="https://www.google.com/jsapi"></script>
<script type="text/javascript" src="//ajax.googleapis.com/ajax/libs/jquery/1.10.2/jquery.min.js"></script>
<script type="text/javascript">
// Load the Visualization API
google.load("visualization", "1", {packages:["corechart"]});
// Set a callback to run when the Google Visualization API is loaded.
google.setOnLoadCallback(drawChart);
function drawChart() {
var jsonData = $.ajax({
url: "get-stats.php",
dataType:"json",
async: false
}).responseText;
var options = {
title: 'Stats'
};
// Create our data table out of JSON data loaded from server.
var data = new google.visualization.DataTable(jsonData);
// Instantiate and draw our chart, passing in some options.
var chart = new google.visualization.LineChart(document.getElementById('chart_div'));
chart.draw(data, options);
}
</script>
</head>
<body>
<!--Div that will hold the chart-->
<div id="chart_div" style="width: 900px; height: 500px;"></div>
</body>
調用chart.draw()
時,站點上會出現錯誤“未定義不是函數”。
我的JSON文件被這樣加載(get-stats.php)
<?php
$string = file_get_contents("stats.json");
echo $string;
?>
JSON的格式如下:
{
"cols": [
{
"id": "date",
"label": "Date",
"type": "datetime"
},
{
"id": "cntall",
"label": "Total",
"type": "number"
},
{
"id": "cntpers",
"label": "Pers",
"type": "number"
}
],
"rows": [
{
"c": [
{
"v": "new Date(2013, 11, 17, 9, 54, 0)"
},
{
"v": 320
},
{
"v": 123
}
]
},
{
"c": [
{
"v": "new Date(2013, 11, 17, 11, 4, 0)"
},
{
"v": 300
},
{
"v": 67
}
]
}
]
}
我懷疑它與JSON有關。 所有代碼均來自google示例。
var data = new google.visualization.DataTable($jsonData);
試試這個
$jsondata => json_encode($jsonData);
並放在php標簽中
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