esedic

// Method 1
var isTouchDevice =
    (('ontouchstart' in window) ||
    (navigator.MaxTouchPoints > 0) ||
    (navigator.msMaxTouchPoints > 0));
if(!isTouchDevice){
    console.log('is not touch');
}else{
    console.log('is touch');
}

chooie

3 things I've learned in 5 years of JavaScript Software Development

Code should lead with the higher-level concepts. The lower-level pieces should follow

Don't force the reader of your code to scroll past the minutiae.

function makeBreakfast() {
  const ingredients = fetchIngredients();
  const friedBacon = fryBacon(ingredients.bacon);
  const cookedScrambledEggs = whiskEggsAndFryThem(ingredients.eggs);
 const preparedMeal = plateAndSeasonMeal(friedBacon, cookedScrambledEggs);