30秒学会 JavaScript 片段 – findKey
Returns the first key that satisfies the provided testing function. Otherwise undefined is returned....
Returns the first key that satisfies the provided testing function. Otherwise undefined is returned....
A hook that checks if the code is running on the browser or the server. Create a custom hook that re...
title: collectInto tags: function,array,intermediate Changes a function that accepts an array into a...
Returns all keys in the provided dictionary that have the given value. Use dictionary.items(), a gen...
Returns 1 if the array is sorted in ascending order, -1 if it is sorted in descending order or 0 if ...
Finds the median of a list of numbers. Use the params keyword to accept either an array or a variabl...
Returns the average value of a list of numbers. Use Iterable.reduce() to get the sum of all the numb...
Creates an array of arrays, ungrouping the elements in an array produced by zip. Use Math.max.apply(...
Creates a function that invokes the provided function with its arguments transformed. Use Array.prot...
Returns a list of elements that exist in both lists. Use Iterable.toSet() to get the unique values i...