underscorejs

class overview

Homework Solution
UnderscoreJS
Common Underscore Functions
switch
Toggling Exercise

underscorejs

Utility library for common JavaScript operations
Most operations also exist in jQuery, but performance is usually better in underscore
Overwrites the '_' character, similar to jQuery overriding the '$' character

UnderscoreJS Homepage

common underscore functions

_.each() - just like $.each
_.keys(obj) - gets all the keys of an object
_.isArray(obj) - determines if an object is an array
_.contains() - returns true if a value is in an array
...and many more!

switch

Common programming structure
Takes a single variable
Each case statement is a possible value in that variable

 switch(myNum) {
 case 1:
    //some code
    break;
 case 2:
    //some code
    break;
 case 3:
 case 4:
    //some code
    break;
 }

switch documentation

cool js thing for the day

Mike Bostock's Blocks

Crazy JavaScript algorithms with full code visible.

AJS Lecture 13: UnderscoreJS

By Ryan Lewis

AJS Lecture 13: UnderscoreJS

581

Ryan Lewis