JSFiddle - React, Tailwind, and code Playground

by Andrey

JavaScript

var allNumbers = [1, 2, 4, 5, 6, 7, 8],
    someNumbers = [1, 2, 'привет', 4, 5, 'loftschool', 6, 7, 8],
    noNumbers = ['это', 'массив', 'без', 'чисел'];

function isSomeTrue(arr, func){
	
  for(var i = 0; i<arr.length; i++){
  
    if(func(arr[i])){	
    	alert('true');
    	return true;
    }
       alert('false');
       return false;
  };
  
};

function isNumber(val){
  return	typeof val == 'number';
};
function isString(val){
	return typeof val == 'string';
};

isSomeTrue(noNumbers, isNumber);