// first get a reference

// to the input tag and button

const input = document.querySelector("#myInput");

const button = document.querySelector("#myBtn");

​

// use the focus method

// to focus input input tag

// when user visits

input.focus();

​

// attach a click handler

// to button element

button.addEventListener("click", () => {

  // whene the user click the button

  // remove the focus form the input tag

  // We can use the blur() method on the

  // input element to acheive that

  input.blur();

});