HELP! * YELLOW=global GREY=local Global HTML version of Foils prepared 21 February 97

Foil 5 The JavaScript Language -- Expressions - I

From Feb 17/19 Delivered Lecture for Course CPS616 -- aJavaScript Language Objects and Frames CPS616 spring 1997 -- Feb 17 and 19 1997. by Geoffrey Fox * Important Information in IMAGE
Secs 77.7 Addon
JavaScript expressions and basic operators are similar to C PERL and Java
Assignment Operators are = += -= *= /= %= <<= >>= >>>= &= ^= |=
  • with x += y; meaning x= x + y;
  • and x %= y; meaning x = x%y; // x mod(y)
Conditional Expressions
  • status = (age >= 18) ? "adult" : "minor"; // sets status to be "adult" if age is larger than or equal to 18. Otherwise it is set to "minor"
Arithmetic operators are as usual with in addition ++ and --
  • y = ++x; // increments x by 1 and sets y to be final value of x


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