I’ve run into an issue with OL 2.4 (branch HEAD) and Microsoft Ajax.Net.
In BaseTypes.js, the following function:
String.prototype.trim = function() {
var b = 0;
while(this.substr(b,1) == " ") {
b++;
}
var e = this.length - 1;
while(this.substr(e,1) == " ") {
e--;
}
return this.substring(b, e+1);
};
Is failing because e is going negative and goes into an endless loop. The
string being fed (from an Ajax.Net call) is simply two spaces (“ “).
It appears that Ajax.Net is also prototyping a trim function onto String,
and commenting out the one in BaseTypes.js gets everything working again.
How do you detect that a function has already been prototyped on to a class
so OL doesn’t have to do it?
Here is a test_String.html that confirms the issue.
<html>
<head>
<script src="../../lib/OpenLayers.js"></script>
<script type="text/javascript"><!--
function test_01_Trim (t) {
t.plan( 1 );
var s;
s = " test ".trim();
size = new OpenLayers.Size(5,6);
//t.ok( size instanceof OpenLayers.Size, "new OpenLayers.Size
returns size object" );
t.eq( s, "test", "string.trim worked correctly");
}
function test_01a_Trim (t) {
t.plan( 1 );
var s;
s = " ".trim();
size = new OpenLayers.Size(5,6);
t.eq( s, "", "string.trim worked correctly");
}
// -->
</script>
</head>
<body>
</body>
</html>
Thanks,
John
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