What does _.identity(value) return?

What does _.pluck([{a: 1}, {a: 2}, {a: 3}], 'a') return?

A). [1, 2, 3]

B). [1, 2]

C). [2, 3]

D). [3, 1]

Which function can be used to delay the execution of a function in Underscore.js?

A). _.defer

B). _.delay

C). _.debounce

D). _.throttle

Which function is used to find unique elements in an array in Underscore.js?

A). _.first

B). _.last

C). _.uniq

D). _.filter

How do you flatten a nested array using Underscore.js?

A). _.map

B). _.flatten

C). _.filter

D). _.reduce

How can you invoke a function a specified number of times in Underscore.js?

A). _.times

B). _.invoke

C). _.repeat

D). _.cycle

What does _.keys({one: 1, two: 2, three: 3}) return?

A). [1, 2, 3]

B). ['one', 'two', 'three']

C). ['1', '2', '3']

D). [1, 2, 'three']

How do you extend an object with properties from other objects in Underscore.js?

A). _.clone

B). _.extend

C). _.omit

D). _.pick

How do you check if a value is an array in Underscore.js?

A). _.isObject

B). _.isArray

C). _.isArguments

D). _.isString

How do you generate a random number within a range in Underscore.js?

A). _.random

B). _.range

C). _.shuffle

D). _.sample

How do you shuffle the elements of an array in Underscore.js?

A). _.each

B). _.shuffle

C). _.sample

D). _.random