我在Netbeans中开发了这样的JSF-Page
<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:h="http://java.sun.com/jsf/html">
<h:head>
<title>Facelet Title</title>
...
<script type="text/javascript" language="JavaScript">
function drawShape()
{
...
var length = shapeCollection.length;
for (var i = 0; i < length; i++)
{
...
}
}
</script>
</h:head>
<h:body onload="drawShape();">
<canvas id="myDrawing" width="500" height="500">
<p>Your browser doesn't support canvas.</p>
</canvas>
</h:body>
</html>
现在我在这部分出现错误 for (var i = 0; i < length; i++)
如果我更换<与!=它的工作原理
我该如何避免这个问题？