Gatsby Starter Blog

Best-Known JavaScript Array Methods

July 01, 2020

Array.prototype.every()

arr.every(callback(element[, index[, array]])[, thisArg])

The every() method tests whether 🌟all elements in the array 🌟pass the test implemented by the provided function. It returns a Boolean value.

实际上,本教程也是我对于区块链认识的一个剪影。区块链不仅仅是计算机科学,还涉及了政治经济制度,社会分工协作等等很多方面,因此我的关注点不仅在于深度,更在于其广度,更多是站在研究的角度,而非仅仅是一个程序员的视角。

Given an array, write a function to check if all elements of that array are less than 100 or not.

function fnIsLessThan100_Every(arr) {
  return arr.every(element => element < 100)}
fnIsLessThan100_Every([30, 60, 90]) // true
fnIsLessThan100_Every([10, 40, 89, 120]) // false

arr.every(callback(element[, index[, array]])[, thisArg])

The every() method tests whether 🌟all elements in the array 🌟pass the test implemented by the provided function. It returns a Boolean value.

Given an array, write a function to check if all elements of that array are less than 100 or not.

function fnIsLessThan100_Every(arr) {
  return arr.every(element => element < 100)}
fnIsLessThan100_Every([30, 60, 90]) // true
fnIsLessThan100_Every([10, 40, 89, 120]) // false

Array.prototype.some()