js for loop of index code example

Example 1: for of get index

for (const v of ['a', 'b', 'c']) {
  console.log(v)
}

// get index
for (const [i, v] of ['a', 'b', 'c'].entries()) {
  console.log(i, v)
}

Example 2: javascript for loop return index

const targetindex = myarray.findIndex(item => item.name === 'xyz');