Why would you use JavaScript IV?

• Typically JavaScript is invoked from HTML and HTML text and JavaScript text are intertwined

• If you need to make a dynamic page from C++ Perl or Java you must write the HTML from these languages

• You can invoke applets from HTML but HTML and applet actions are not linked. In case of JavaScript HTML and JavaScript are closely linked

• JavaScript is an example of an important concept -- the domain specific interpreter which we can expect to be of growing importance

  • Note Postscript is an interpreter for text layout; MATLAB an interpreter for Matrix arithmetic, Mathematica or Maple for Mathematics …..

Text ……………………………………………… Computer LanguageHTML---> JavaScript Java <----- C++

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