every javascript mdn code example

Example 1: foreach jas

const array1 = ['a', 'b', 'c'];

array1.forEach(element => console.log(element));

Example 2: js every

const exams = [80, 98, 92, 78, 77, 90, 89, 84, 81, 77]
exams.every(score => score >= 75) // Say true if all exam components are greater or equal than 75

Example 3: every in javascript

let data = [ {status: true}, {status: false}, {status: true} ]
let result = data.every((i) => {
	return i.status === true
})
console.log(result) // false

Example 4: forEach

const arraySparse = [1,3,,7]
let numCallbackRuns = 0

arraySparse.forEach((element) => {
  console.log(element)
  numCallbackRuns++
})

console.log("numCallbackRuns: ", numCallbackRuns)

// 1
// 3
// 7
// numCallbackRuns: 3
// comment: as you can see the missing value between 3 and 7 didn't invoke callback function.

Example 5: js every

function isBigEnough(element, index, array) {
  return element >= 10;
}
[12, 5, 8, 130, 44].every(isBigEnough);   // false
[12, 54, 18, 130, 44].every(isBigEnough); // true