我希望有人能告诉我我做错了什么。我想更新谷歌的图表与XMLHTTP,我的剧本是在这里:用xmlhttp更新javascript
<!--
You are free to copy and use this sample in accordance with the terms of the
Apache license (http://www.apache.org/licenses/LICENSE-2.0.html)
-->
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="content-type" content="text/html; charset=utf-8"/>
<title>
Google Visualization API Sample
</title>
<div id="myDiv">
<script type="text/javascript">
function drawVisualization() {
// Create and populate the data table.
var data = google.visualization.arrayToDataTable([
['Year', 'Austria', 'Belgium', 'Czech Republic', 'Finland', 'France', 'Germany'],
['2003', 1336060, 3817614, 974066, 1104797, 6651824, 15727003],
['2004', 1538156, 3968305, 928875, 1151983, 5940129, 17356071],
['2005', 1576579, 4063225, 1063414, 1156441, 5714009, 16716049],
['2006', 1600652, 4604684, 940478, 1167979, 6190532, 18542843],
['2007', 1968113, 4013653, 1037079, 1207029, 6420270, 19564053],
['2008', 1901067, 6792087, 1037327, 1284795, 6240921, 19830493]
]);
// Create and draw the visualization.
new google.visualization.ColumnChart(document.getElementById('visualization')).
draw(data,
{title:"Yearly Coffee Consumption by Country",
width:600, height:400,
hAxis: {title: "Year"}}
);
}
google.setOnLoadCallback(drawVisualization);
;
</script>
</div>
<script>
function loadXMLDoc()
{
var xmlhttp;
if (window.XMLHttpRequest)
{// code for IE7+, Firefox, Chrome, Opera, Safari
xmlhttp=new XMLHttpRequest();
}
else
{// code for IE6, IE5
xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
}
xmlhttp.onreadystatechange=function()
{
if (xmlhttp.readyState==4 && xmlhttp.status==200)
{
document.getElementById("myDiv").innerHTML=xmlhttp.responseText;
}
}
xmlhttp.open("GET","UpdateGraph.php",true);
xmlhttp.send();
}
</script>
</head>
<body style="font-family: Arial;border: 0 none;">
<div id="visualization" style="width: 600px; height: 400px;"></div>
<button type="button" onclick="loadXMLDoc()">Change Content</button>
</body>
</html>
下面这里是PHP文件(UpdateGraph.php),我想和更新我的内容,我的意图是,第二图表会显示出来。它目前的工作方式是引入空间来显示另一个图形以及我创建的按钮,以防它自动“重绘”。当我从UpdateGraph.php文件中删除脚本标记时,只有文本显示在该区域中,我期望新图形会显示。
<script type="text/javascript" src="http://www.google.com/jsapi"></script>
<script type="text/javascript">
google.load('visualization', '1', {packages: ['corechart']});
</script>
<script type="text/javascript">
function drawVisualization2() {
// Create and populate the data table.
var data = google.visualization.arrayToDataTable([
['Year', 'Austria', 'Belgium', 'Czech Republic', 'Finland', 'France', 'Germany'],
['2003', 1336060, 3817614, 974066, 1104797, 6651824, 15727003],
['2004', 1538156, 3968305, 928875, 1151983, 5940129, 17356071],
['2005', 1576579, 4063225, 1063414, 1156441, 5714009, 16716049],
['2006', 1600652, 4604684, 940478, 1167979, 6190532, 18542843],
['2007', 1968113, 4013653, 1037079, 1207029, 6420270, 19564053],
['2008', 1901067, 6792087, 1037327, 1284795, 6240921, 19830493]
]);
// Create and draw the visualization.
new google.visualization.ColumnChart(document.getElementById('visualization2')).
draw(data,
{title:"Yearly Coffee Consumption by Country",
width:600, height:400,
hAxis: {title: "Year"}}
);
}
google.setOnLoadCallback(drawVisualization2)
</script>
<button onclick="drawVisualization2()">Redraw 2nd Graph</button>
<div id="visualization2" style="width: 600px; height: 400px;"></div>
我没有问题带来的文字,但我很困惑,为什么我不能够在新的JavaScript或更新JavaScript来实现。
谢谢(顺便说一句,当它被复制并粘贴到当前包含“DIV ID =” myDiv“的行UpdateGraph.php代码工作就好了)。
感谢你的帮助,你的建议我也跟着发生了什么这里列出,并成功:https://developers.google.com/chart/interactive/docs/php_example – user1922920