30秒学会 JavaScript 片段 – isEmpty
Returns true if the a value is an empty object, collection, has no enumerable properties or is any t...
Returns true if the a value is an empty object, collection, has no enumerable properties or is any t...
Returns the minimum value from the provided array. Use array_filter() and min() to find the minimum ...
Returns an object with the unique values of an array as keys and their frequencies as the values. Us...
Counts the occurrences of a value in an array. Use Array.prototype.reduce() to increment a counter e...
Returns the last element in an array. Use end() to return the last item in the array.
Performs a deep comparison between two values to determine if they are equivalent. Check if the two ...
Returns the last n elements in a collection. Use IEnumerable.Count() to check if the enumerable is n...
Returns the head of a list. Use reset() to return the first item in the array.
Retrieves all of the values for a given key. Use array_map() to map each object in the $items array ...
Creates an array of elements, grouped based on the position in the original arrays and using functio...