<script language="JavaScript"> 
try 
{ 
throw new Error(10,"asdasdasd") 
} 
catch (e) 
{ 
alert(e.message); 
alert(e.description) 
alert(e.number) 
alert(e.name) 
throw new Error(10,"asdasdasd") 
} 

</script> 

try {
 foo.bar();
} catch (e) {
 alert(e.name + ": " + e.message);
}

new Error();
new Error("異常信息");

try {
 throw new Error("Whoops!");
} catch (e) {
 alert(e.name + ": " + e.message);
}

try {
 foo.bar();
} catch (e) {
 if (e instanceof EvalError) {
   alert(e.name + ":" + e.message);
 } 
 else if (e instanceof RangeError) {
   alert(e.name + ": " + e.message);
 } 
 // etc 
}

try {
 foo.bar();
} catch (e) {
 if (browserType != BROWSER_IE) {                
   alert("name: " + e.name + 
   "message: " + e.message + 
   "lineNumber: " + e.lineNumber + 
   "fileName: " + e.fileName + 
   "stack: " + e.stack);      
 } 
 else {            
   alert("name: " + e.name +    
   "errorNumber: " + (e.number & 0xFFFF ) + 
   "message: " + e.message");      
 } 
}

try {
 throw new Date(); // 拋出當前時間對象 
} catch (e) {
 alert(e.toLocaleString()); // 使用本地格式顯示當前時間 
}