30秒学会 JavaScript 片段 – createDirIfNotExists
Creates a directory, if it does not exist. Use fs.existsSync() to check if the directory exists, fs....
Creates a directory, if it does not exist. Use fs.existsSync() to check if the directory exists, fs....
Randomizes the order of the values of an array, returning a new array. Use the Fisher-Yates algorith...
Returns a new list containing the elements between start and end. Negative values can be used, indic...
Builds an array, using an iterator function and an initial seed value. Use a while loop and Array.pr...
Returns a string of the form HH:MM:SS from a Date object. Use Date.prototype.toTimeString() and Stri...
Converts an angle from degrees to radians. Use math.pi and the degrees to radians formula to convert...
Returns all distinct values in a collection. Use IEnumerable.GroupBy() to create groups for each dis...
Returns true if the given string is a palindrome, false otherwise. Check if the value of strrev($str...
Returns an array of n-tuples of consecutive elements. Use Array.prototype.slice() and Array.prototyp...
Returns true if the given string can be parsed into a double, false otherwise. Return the result of ...