Seamless Toggle Between Light and Dark Modes

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I created a code with a toggle button that effortlessly switches between a vibrant yellow light bulb mode and a sleek black mode. With just one click, you can change your interface’s look to suit your mood or environment.

<!DOCTYPE html>
<html lang="en" xmlns:mso="urn:schemas-microsoft-com:office:office" xmlns:msdt="uuid:C2F41010-65B3-11d1-A29F-00AA00C14882">
  <head>
    <meta charset="UTF-8" />
    <meta http-equiv="X-UA-Compatible" content="IE=edge" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title></title>
    <link rel="stylesheet" href="style.css" />
  
<!--[if gte mso 9]><xml>
<mso:CustomDocumentProperties>
<mso:display_urn_x003a_schemas-microsoft-com_x003a_office_x003a_office_x0023_Editor msdt:dt="string">Riddhi Phatnani</mso:display_urn_x003a_schemas-microsoft-com_x003a_office_x003a_office_x0023_Editor>
<mso:Order msdt:dt="string">16128100.0000000</mso:Order>
<mso:SharedWithUsers msdt:dt="string"></mso:SharedWithUsers>
<mso:_ExtendedDescription msdt:dt="string"></mso:_ExtendedDescription>
<mso:display_urn_x003a_schemas-microsoft-com_x003a_office_x003a_office_x0023_Author msdt:dt="string">Riddhi Phatnani</mso:display_urn_x003a_schemas-microsoft-com_x003a_office_x003a_office_x0023_Author>
<mso:ComplianceAssetId msdt:dt="string"></mso:ComplianceAssetId>
<mso:TriggerFlowInfo msdt:dt="string"></mso:TriggerFlowInfo>
<mso:ContentTypeId msdt:dt="string">0x0101002433A22E08CBFB49B0E65B7E0B5148FD</mso:ContentTypeId>
<mso:_SourceUrl msdt:dt="string"></mso:_SourceUrl>
<mso:_SharedFileIndex msdt:dt="string"></mso:_SharedFileIndex>
<mso:MediaLengthInSeconds msdt:dt="string"></mso:MediaLengthInSeconds>
</mso:CustomDocumentProperties>
</xml><![endif]-->
</head>
  <body>
    <input type="checkbox" id="dark-mode" class="input" />
    <label for="dark-mode" class="label">
      <div class="circle"></div>
    </label>
    <script src="index.js"></script>
  </body>
</html>
body {
  margin: 0;
  display: flex;
  justify-content: center;
  height: 100vh;
  align-items: center;
  transition: .4s;
}

.input {
  visibility: hidden;
}

.label {
  position: absolute;
  width: 80px;
  height: 40px;
  background-color: black;
  border-radius: 20px;
  cursor: pointer;
}

.circle {
  width: 34px;
  background-color: #FEDD00;
  height: 34px;
  border-radius: 50%;
  top: 3px;
  position: absolute;
  left: 3px;
  animation: toggleOff 0.4s linear forwards;
}

.input:checked+.label {
  background-color: #FEDD00;
}

.input:checked+.label .circle {
  animation: toggleOn 0.4s linear forwards;
  background-color: black;
}

@keyframes toggleOn {
  0% {
    transform: translateX(0);
  }

  100% {
    transform: translateX(40px);
  }
}

@keyframes toggleOff {
  0% {
    transform: translateX(40px);
  }

  100% {
    transform: translateX(0);
  }
}
const inputEl = document.querySelector(".input");

const bodyEl = document.querySelector("body");

inputEl.checked = JSON.parse(localStorage.getItem("mode"));

updateBody();

function updateBody() {
  if (inputEl.checked) {
    bodyEl.style.background = "black";
  } else {
    bodyEl.style.background = "#FEDD00";
  }
}

inputEl.addEventListener("input", () => {
  updateBody();
  updateLocalStorage();
});

function updateLocalStorage() {
  localStorage.setItem("mode", JSON.stringify(inputEl.checked));
}

Code Credit : Dr. Sahand Ghavidel

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