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ch3 : lists

  • Nested list : can put a second list inside an <li> element to create a sublist or nested list.

ch13:

ch 2: BASIC JAVASCRIPT INSTRUCTIONS

  • Arrays are especially helpful when you do not know how many items a list will contain.
  • The values in the array do not need to be the same data type.
  • Each item in an array is automatically given a number called an index.

ch4 : DECISIONS & LOOPS

img falsy values in JS

  • null and undefined are both falsy, they are not equal to anything other than themselves.
  • NaN is considered falsy, it is not equivalent to anything; it is not even equivalent to itself.