javascript loading animation on button click

<button class="action-btn" id="login-btn">Login</button>Login

.action-btn {
  background-color: #FF7F00;
  border: none;
  font-size: 20px;
  font-weight: 600;
  text-transform: uppercase;
  padding: 0.5em 1.25em;
  color: white;
  border-radius: 0.15em;
  transition: 0.3s;
  cursor: pointer;
  position: relative;
  display: block;
}

.action-btn:hover {
  background-color: #ff6600;
}

.action-btn:focus {
  outline: 0.05em dashed #ff6600; 
  outline-offset: 0.05em;
}

.action-btn::after {
  content: '';
  display: block;
  width: 1.2em;
  height: 1.2em;
  position: absolute;
  left: calc(50% - 0.75em);
  top: calc(50% - 0.75em);
  border: 0.15em solid transparent;
  border-right-color: white;
  border-radius: 50%;
  animation: button-anim 0.7s linear infinite;
  opacity: 0;
}

@keyframes button-anim {
  from {
    transform: rotate(0);
  }
  to {
    transform: rotate(360deg);
  }
}

.action-btn.loading {
  color: transparent;
}

.action-btn.loading::after {
  opacity: 1;
}

/* em values are used to adjust button values such as padding, radius etc. based on font-size */.action-btn {
  background-color: #FF7F00;
  border: none;
  font-size: 20px;
  font-weight: 600;
  text-transform: uppercase;
  padding: 0.5em 1.25em;
  color: white;
  border-radius: 0.15em;
  transition: 0.3s;
  cursor: pointer;
  position: relative;
  display: block;
}

.action-btn:hover {
  background-color: #ff6600;
}

.action-btn:focus {
  outline: 0.05em dashed #ff6600; 
  outline-offset: 0.05em;
}

.action-btn::after {
  content: '';
  display: block;
  width: 1.2em;
  height: 1.2em;
  position: absolute;
  left: calc(50% - 0.75em);
  top: calc(50% - 0.75em);
  border: 0.15em solid transparent;
  border-right-color: white;
  border-radius: 50%;
  animation: button-anim 0.7s linear infinite;
  opacity: 0;
}

@keyframes button-anim {
  from {
    transform: rotate(0);
  }
  to {
    transform: rotate(360deg);
  }
}

.action-btn.loading {
  color: transparent;
}

.action-btn.loading::after {
  opacity: 1;
}

/* em values are used to adjust button values such as padding, radius etc. based on font-size */

const loginBtn = document.getElementById("login-btn");

loginBtn.addEventListener('click', () => {
  // Show loader on button click
  loginBtn.classList.add("loading");
  // Hide loader after success/failure - here it will hide after 2seconds
  setTimeout(() => loginBtn.classList.remove("loading"), 3000);
});const loginBtn = document.getElementById("login-btn");

loginBtn.addEventListener('click', () => {
  // Show loader on button click
  loginBtn.classList.add("loading");
  // Hide loader after success/failure - here it will hide after 2seconds
  setTimeout(() => loginBtn.classList.remove("loading"), 3000);
});

javascript loading animation on button click

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