syntax:

_argc

description:

This property refers to the number of parameters passed to the main() function of a script. The name of the script is always the first parameter, so if _argc == 1, then the script received no arguments. See the main() function for more information on argc and the main() function. General programming practice uses argc, a parameter to the main()function rather than _argc.

see:

main() function, global._argv

example:

function main(argc, argv)

{

   // At this point, unless deliberately changed

   // by special programming, _argc == argc

}