reading-notes

Text in HTML

• headings
  • <h1>...<h6>
• Paragraphs
  • <p>
• Bold
  • <b>
• italic
  • <i>
• superscript / subscript
  • <sup>
  • <sub>
• white space
  • Line break <br />
  • Horizontal rule <hr />

CSS

CSS uses selectors and declarations. Declarations are made up of property and value pairs, separated by a colon. CSS attributes can be found here

• CSS can be applied inline or by linking an external (style.css) file.
• if multiple style attributes are applied to a single element the applied style will be based on
  • specificity
  • which was written last
  • using important! to override other selectors

JavaScript

• Variables
  • declared with
    • var
    • let
    • const
  • store info or reference other items
• Data types
  • strings
  • null
    • an object that represents nothing
  • numbers
    • int
    • floats
  • boolean
    • True
    • False
• Arrays
  • created with Array() constructor function or by assigning [] to a variable
  • stores a list of values
  • can be indexed thru, arrayName[indexnumber]
  • can store any and/or all data types, as well as objects and functions
  • methods
    • .pop() removed last item from array
    • .push() adds item(s) to the end of the array
    • .shift() removes first item in the array
    • .unshift() adds item to first spot in array
    • .splice(n, x, y, y) break array at index n, can accept second argument x to deternmine how many items to splice, or y to add y
• operators
  • mathematical operators
    • + - / * ++ -- %
  • string operators
    • "string" + variable + "string"
• expressions