Web Technology Questions

Files can be read and written by using java script functions – fopen(),fread() and fwrite().

The function fopen() takes two parameters – 1. Path and 2. Mode (0 for reading and 3 for writing). The fopen() function returns -1, if the file is successfully opened.

Ex: file=fopen(getScriptPath(),0);

The function fread() is used for reading the file content.

Ex: str = fread(file,flength(file));

The function fwrite() is used to write the contents to the file.

Ex(): file = fopen("c:\MyFile.txt", 3);// opens the file for writing

fwrite(file, str);// str is the content that is to be written into the file.

The Internet was originally called Advanced Research Project Agency Network (ARPANET).

- In order to create a DHTML drop down menu we need JavaScript API. The API (Application Programming Interface) consists of core set of cross-browser JavaScript functions to make DHTML programming easy and quick. This API enables moving and hiding page elements as well as acts as getter and setter of page elements attributes.

- Second we define on image object and off image object and string containing the URL of the "off" version.

- Then we create the menu items, label items and sub-menu items. If we wish we can use images also.

- Then we need to define our own global variables that will be used by the menu. Using global goes against oops design but makes sharing data easier.

- Create the menubar object, adding the menu labels and writing menubars.

- Create menu object, adding menu items and writing menus.

- Hiding and displaying the menus and attaching stylesheet.