Basic HTML version of Foils prepared 1 Dec 97

Foil 21 Variables

From Overview of Basic JavaScript -- Web Client Scripting Language Jackson State CSC499 -- Fall Semester 97. by Tom Scavo,Geoffrey C. Fox
1 Variables (identifiers) must begin with a letter, underscore, or dollar sign:
  • var := [a-zA-Z_$][a-zA-Z0-9_$]*
2 Declare variables in var statements: var aNumber = 137; var aString = "1";
3 Embed variables in HTML attributes: <IMG SRC="&{v1};" WIDTH="&{v2};"> where v1 and v2 are JavaScript vars
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