Useful js

useful.js

// LOOP ARRAY KEYS and INDEXES
let myArray = ['fruit', 'fish', 'seahorses', 'mudslides'];

for (let [index, value] of myArray.entries()) {
  console.log(index, value);
}

/*
0 "fruit"
1 "fish"
2 "seahorses"
3 "mudslides"
*/


// GET OBJECT KEYS
let myObj = {
  a: 1,
  b: 'Data',
  c: false
};

console.log(Object.keys(myObj)); // ["a", "b", "c"] 
console.log(Object.values(myObj)); // [1, "Data", false]

// ACCESS UPLOADED FILE DATA
// HTML: <input type="file" multiple>

myInput.addEventListener('change', function () {
  myFiles = myInput.files;
  console.log(myFiles[0].name);
  console.log(myFiles[0].size);
  console.log(myFiles[0].lastModified);
}, false);