scrap pad

JavaScript re-introduction

excellent slideshow, A (Re)-Introduction to JavaScript, by Simon Willison. Read through it this morning, but need to read through it again (stats class tomorrow AM?) It was really helpful with thinking about [custom] JavaScript objects, which totally baffle me, thou a little less now [prototype??]. notes:

• js objects (through slide 77)
• "short-circuit logic" (cute)

  The && and || operators use short-circuit logic: they will execute their second operand dependant on the first.

  • This is useful for checking for null objects before accessing their attributes:
    var name = o && o.getName();
  • Or for setting default values:
    var name = otherName || "default";

• extending core objects
• memory leaks: I should take care to be aware of this esp. because I am writing stuff entirely in firefox.
• and then the summary of the convoluted stuff, at least. after reading the entire slideshow, this still makes me blink.

linked in this post. there's a link to a pdf of his notes there too.