30秒学会 JavaScript 片段 – sortedIndex
Returns the lowest index at which value should be inserted into array in order to maintain its sort ...
Returns the lowest index at which value should be inserted into array in order to maintain its sort ...
Adds an event listener to an element with the ability to use event delegation. Use EventTarget.addEv...
Returns the difference between two arrays. Create a Set from b, then use Array.prototype.filter() on...
Implementation of the Luhn Algorithm used to validate a variety of identification numbers, such as c...
Returns the singular or plural form of the word based on the input number. If the first argument is ...
Returns the average of an array, after mapping each element to a value using the provided function. ...
Returns a sorted array of objects ordered by properties and orders. Uses Array.prototype.sort(), Arr...
Creates a counter with the specified range, step and duration for the specified selector. Check if s...
Returns the last element in an array. Check if arr is truthy and has a length property, use arr.leng...
Returns the first key that satisfies the provided testing function. Otherwise undefined is returned....