//g.test()

又火星了~

<html>
<script>
function log( str )
{
    if ( window.console )
    {
        console.log( str ); 
    }
    else
    {
        alert( str );
    }
}
 
var reg = /^\s*$/g;
log( reg.test( ' ' ) );
log( reg.test( ' ' ) );
 
var reg = /^\s*$/;
log( reg.test( ' ' ) );
log( reg.test( ' ' ) );
</script>
</html>