–EvalError, URIError, RangeError, etc.
•捕获方式：
–try { …throw new Error(…) } catch(e) { … }
–理论上可以throw出任意对象
•Error对象IE和FireFox公有属性
–message：错误信息
Error浏览器特定属性
•IE：
–description：同message属性
–number：错误编号，只有脚本引擎抛出的错误才有该属性
•FireFox：
–fileName：创建错误的文件
–lineNumber：创建错误对象的行号
–stack：创建错误时的堆栈信息
html
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
<head>
<title>Native Error Type</title>
<script language="javascript" type="text/javascript" src="Error.js"></script>
</head>
<body>
<script language="javascript" type="text/javascript">
try
{
throwError();
}
catch(e)
{
var errorMsg = ("Message: " + e.message + "\n");
if (!e.stack) // IE
{
errorMsg += ("Description: " + e.description + "\n");
errorMsg += ("Number: " + e.number);
}
else
{
errorMsg += ("Line Number: " + e.lineNumber + "\n");
errorMsg += ("File Name: " + e.fileName + "\n\n");
errorMsg += ("Stack Trace:\n" + e.stack);
}
alert(errorMsg);
}
</script>
</body>
</html>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head>
<title>Native Error Type</title>
<script language="javascript" type="text/javascript" src="Error.js"></script>
</head>
<body>
<script language="javascript" type="text/javascript">
try
{
throwError();
}
catch(e)
{
var errorMsg = ("Message: " + e.message + "\n");
if (!e.stack) // IE
{
errorMsg += ("Description: " + e.description + "\n");
errorMsg += ("Number: " + e.number);
}
else
{
errorMsg += ("Line Number: " + e.lineNumber + "\n");
errorMsg += ("File Name: " + e.fileName + "\n\n");
errorMsg += ("Stack Trace:\n" + e.stack);
}
alert(errorMsg);
}
</script>
</body>
</html>
Error.js
function throwError()
{
throw new Error("Custom Error");
}
function getNiceError()
{
var e = Error.create("Error Message",
{customMessage : "Custom Message"});
e.popStackFrame();
return e;
}
{
throw new Error("Custom Error");
}
function getNiceError()
{
var e = Error.create("Error Message",
{customMessage : "Custom Message"});
e.popStackFrame();
return e;
}