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Array declaration with element count

< html> <head> <title>A Simple Page</title> <script language="javascript"> <!-- var days_of_week = new Array(7); days_of_week[0] = "Sunday"; days_of_week[1] = "Monday"; days_of_week[2] = "Tuesday"; days_of_week[3] = "Wednesday"; days_of_week[4] = "Thursday"; days_of_week[5] = "Friday"; days_of_week[6] = "Saturday"; var x = 2; alert(days_of_week[x]); //  --> </script> </head> <body> </body> </html>