Answer & Solution
Answer: Option C
Solution:
The _.filter function looks through each value in a list and returns an array of all the values that pass a truth test (predicate).
Q
What does the _.filter function do in Underscore.js?
Related Questions on Average
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
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 retrieves the minimum value in a list using Underscore.js?
A). _.min
B). _.max
C). _.reduce
D). _.filter
What does the _.each function do in Underscore.js?
A). Iterates over a list of elements
B). Creates a new array with transformed values
C). Filters values in a list
D). Reduces the list to a single value
How do you check if a value is an array in Underscore.js?
A). _.isObject
B). _.isArray
C). _.isArguments
D). _.isString
What does _.identity(value) return?
A). null
B). undefined
C). The same value
D). A new value
What is the output of _.last([1, 2, 3, 4, 5], 2)?
A). [1, 2]
B). [4, 5]
C). [5]
D). [3, 4, 5]
Which function is used to clone an object in Underscore.js?
A). _.extend
B). _.clone
C). _.map
D). _.filter