for loop on set index javascript code example
Example 1: javascript enumerate with index
const iterable = [...];
for (const [index, elem] in iterable.entries()) {
f(index, elem);
}
// or
iterable.forEach((elem, index) => {
f(index, elem);
});
Example 2: javascript for loop return index
const targetindex = myarray.findIndex(item => item.name === 'xyz');