item = Object
To access 'dc:creator' simply use:
item['dc:creator'][0];
Monday 10 September 2012
How to select a JSON object with a colon in the key
To access 'dc:creator' simply use:
item['dc:creator'][0];
Console.trace() to debug javascript
The following is taken from the firebug wiki:
We have all been there struggling to fix javascript bugs - we know where they break, but take ages working out what called that function causing in to break. Console.trace() allows us to view the full stacktrace and more easily debug our code.
Post your own experiences in the comments below!
Console.trace() prints an interactive stack trace of JavaScript execution at the point where it is called.
The stack trace details the functions on the stack, as well as the values that were passed as arguments to each function. You can click each function to take you to its source in the Script tab, and click each argument value to inspect it in the DOM or HTML tabs.
We have all been there struggling to fix javascript bugs - we know where they break, but take ages working out what called that function causing in to break. Console.trace() allows us to view the full stacktrace and more easily debug our code.
Post your own experiences in the comments below!
Friday 7 September 2012
Using Chrome’s Task Manager to Kill Broken Tabs
If you encounter a situation where one of the tabs in Google Chrome is causing you problems and won’t close, you don’t have to close the browser to get rid of your troubles. Chrome comes with its own Task Manager that shows you how much of available resources are used by any open pages and used plug-ins. It also allows you to end process on any open tab without having to shutdown the browser.
1. While in Google Chrome, use the following keyboard shortcut: Shift+Esc.
2. The Task Manager will appear. Select the desired page that needs to be closed.
3. Click the End Process button.
Wednesday 5 September 2012
Batch Cheat Sheet
I dislike batch as a language - I much prefer shell scripts, but for when needs must here is a cheat sheet.
Enter your experiences with batch in the comments and I'll do my best to answer any questions.
To view the detailed help for each command:
Enter your experiences with batch in the comments and I'll do my best to answer any questions.
To view the detailed help for each command:
myCommand /?
To accept user input as a variable:
set /p Input=Enter some text:
Later you can use that variable as argument to a command:
To stop the console from closing after running a batch script:
Enter PAUSE at the end of your batch script. This waits for user input and will close when you press any key.
myCommand %Input%
To stop the console from closing after running a batch script:
Enter PAUSE at the end of your batch script. This waits for user input and will close when you press any key.
PAUSE
CACLS Change file permissions CALL Call one batch program from another CD Change Directory - move to a specific Folder CHANGE Change Terminal Server Session properties CHKDSK Check Disk - check and repair disk problems CHKNTFS Check the NTFS file system CHOICE Accept keyboard input to a batch file CIPHER Encrypt or Decrypt files/foldersCleanMgr Automated cleanup of Temp files, recycle bin CLEARMEM Clear memory leaks CLIP Copy STDIN to the Windows clipboard. CLS Clear the screen CLUSTER Windows Clustering CMD Start a new CMD shell COLOR Change colours of the CMD window COMP Compare the contents of two files or sets of files COMPACT Compress files or folders on an NTFS partition COMPRESS Compress individual files on an NTFS partition CON2PRT Connect or disconnect a Printer CONVERT Convert a FAT drive to NTFS. COPY Copy one or more files to another location CSVDE Import or Export Active Directory data --------------------------- DATE Display or set the dateDcomcnfg DCOM Configuration Utility DEFRAG Defragment hard drive DEL Delete one or more files DELPROF Delete NT user profiles DELTREE Delete a folder and all subfoldersDevCon Device Manager Command Line Utility DIR Display a list of files and folders DIRUSE Display disk usage DISKCOMP Compare the contents of two floppy disks DISKCOPY Copy the contents of one floppy disk to another DNSSTAT DNS Statistics DOSKEY Edit command line, recall commands, and create macros DSADD Add user (computer, group..) to active directoryDSQUERY List items in active directory DSMOD Modify user (computer, group..) in active directory --------------------------- ECHO Display message on screen ENDLOCAL End localisation of environment changes in a batch file ERASE Delete one or more files EXIT Quit the CMD shell EXPAND Uncompress files EXTRACT Uncompress CAB files --------------------------- FC Compare two files FDISK Disk Format and partition FIND Search for a text string in a file FINDSTR Search for strings in files FOR Conditionally perform a command several times FORFILES Batch process multiple files FORMAT Format a disk FREEDISK Check free disk space (in bytes) FSUTIL File and Volume utilities FTP File Transfer Protocol FTYPE Display or modify file types used in file extension associations --------------------------- GLOBAL Display membership of global groups GOTO Direct a batch program to jump to a labelled line --------------------------- HELP Online Help HFNETCHK Network Security Hotfix Checker --------------------------- IF Conditionally perform a command IFMEMBER Is the current user in an NT Workgroup INSTSRV Install an NT Service IPCONFIG Configure IP --------------------------- KILL Remove a program from memory --------------------------- LABEL Edit a disk label LOCAL Display membership of local groups LOGEVENT Write text to the NT event viewer. LOGOFF Log a user off LOGTIME Log the date and time in a file --------------------------- MAPISEND Send email from the command line MEM Display memory usage MD Create new folders MODE Configure a system device MORE Display output, one screen at a time MOUNTVOL Manage a volume mount point MOVE Move files from one folder to another MOVEUSER Move a user from one domain to another MSG Send a message MSIEXEC Microsoft Windows Installer MSINFO Windows NT diagnostics MUNGE Find and Replace text within file(s) MV Copy in-use files --------------------------- NET Manage network resources NETDOM Domain Manager NETSH Configure network protocols NETSVC Command-line Service Controller NBTSTAT Display networking statistics (NetBIOS over TCP/IP) NETSTAT Display networking statistics (TCP/IP) NOW Display the current Date and Time NSLOOKUP Name server lookup NTBACKUP Backup folders to tape NTRIGHTS Edit NT user account rights --------------------------- PATH Display or set a search path for executable files PATHPING IP trace utility PAUSE Suspend processing of a batch file and display a message PERMS Show permissions for a user PERFMON Performance Monitor PING Test a network connection POPD Restore the previous value of the current directory saved by PUSHD PORTQRY Display the status of ports and services PRINT Print a text file PRNCNFG Display, configure or rename a printer PRNMNGR Add, delete, list printers set the default printer PROMPT Change the command prompt PUSHD Save and then change the current directory --------------------------- QGREP Search file(s) for lines that match a given pattern. --------------------------- RASDIAL Manage RAS connections RASPHONE Manage RAS connections RECOVER Recover a damaged file from a defective disk. REG Read, Set or Delete registry keys and values REGEDIT Import or export registry settings REGSVR32 Register or unregister a DLL REGINI Change Registry Permissions REM Record comments (remarks) in a batch file REN Rename a file or files. REPLACE Replace or update one file with another RD Delete folder(s) RDISK Create a Recovery Disk RMTSHARE Share a folder or a printer ROBOCOPY Robust File and Folder Copy ROUTE Manipulate network routing tables RUNAS Execute a program under a different user account RUNDLL32 Run a DLL command (add/remove print connections) --------------------------- SC Service Control SCHTASKS Create or Edit Scheduled Tasks SCLIST Display NT Services ScriptIt Control GUI applications SET Display, set, or remove Windows NT environment variables SETLOCAL Begin localisation of environment changes in a batch file SETX Set environment variables permanently SHARE List or edit a file share or print share SHIFT Shift the position of replaceable parameters in a batch file SHORTCUT Create a windows shortcut (.LNK file) SHOWGRPS List the NT Workgroups a user is in SHOWMBRS List the members of an NT Workgroup SHUTDOWN Shutdown the computer SHUTGUI Shutdown the computer SLEEP Wait for x seconds SOON Schedule a command to run in the near future SORT Sort input START Start a separate window to run a specified program or command SU Switch User SUBINACL Edit file and folder Permissions, Ownership and Domain SUBST Associate a path with a drive letter --------------------------- TASKLIST List running applications and services TIME Display or set the system time TIMEOUT Delay processing of a batch file TITLE Set the window title for a CMD.EXE session TOUCH Change file timestamps TRACERT Trace route to a remote host TREE Graphical display of folder structure TYPE Display the contents of a text file --------------------------- USRSTAT List domain usernames and last login --------------------------- VER Display version information VERIFY Verify that files have been saved VOL Display a disk label --------------------------- WHERE Locate and display files in a directory tree WHOAMI Output the current UserName and domain WINMSD Windows NT Diagnostics WINMSDP Windows NT Diagnostics IIWMIC WMI Command --------------------------- XCACLS Change file permissions XCOPY Copy files and folders
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