javascript forin 循环 JavaScript try catch 语句 JavaScript try catch 语句 javascript forin 循环 <html> <body> <script type = "text/javascript"> <!-- var aProperty; document.write("Navigator Object Properties<br /> "); for (aProperty in navigator) { document.write(aProperty); document.write("<br />"); } document.write ("Exiting from the loop!"); //--> </script> <p>Set the variable to different object and then try...</p> </body> </html> JavaScript try catch 语句 JavaScript try catch 语句