JS-template-string.js

const item = function(id) {
  return `
    <input type="text" name="${id}"/>
  `;
};

const list = function(ids) {
  return `
    <div>
      ${ids.map(item)}
    </div>
  `;
};

const form = function(ids) {
  return `
    <form action="">
      ${list(ids)}
      <button type="submit">submit</button>
    </form>
  `;
};

const render = function(ids) {
  const target = document.querySelector('#container');
  target.innerHTML = form(ids);
};

// <form action="">
//  <div>
//    <input type="text" name="0"/>
//    <input type="text" name="1"/>
//    ...
//  </div>
//  <button>submit</button>
// </form>
const ids = [0,1,2,3,4];
render(ids);