Advanced-JavaScript-With-Projects/DOM.html at main · marleyDip/Advanced-JavaScript-With-Projects · GitHub

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<!DOCTYPE html>
<html lang="en">
  <head>
    <title>DOM Manipulation</title>
    <style>
      body {
        text-align: center;
      }

      #my-button {
        height: 50px;
        width: 50px;
        font-size: 25px;
        border: none;
        border-radius: 5px;
      }

      .odd {
        background-color: aqua;
      }
      .even {
        background-color: lawngreen;
      }
    </style>
  </head>
  <body>
    <h2>Times of Button Pressed</h2>
    <button id="my-button" onclick="buttonPressed()"></button>

    <script>
      //let noOfTimesClicked = 0;

      let noOfTimesClicked = localStorage.getItem("noOfTimesClicked") || 0;

      function buttonPressed() {
        noOfTimesClicked++;

        localStorage.setItem("noOfTimesClicked", noOfTimesClicked);

        updateButton();
      }

      function updateButton() {
        let button = document.querySelector("#my-button");

        if (noOfTimesClicked % 2 === 0) {
          button.classList.add("even");
          button.classList.remove("odd");
        } else {
          button.classList.remove("even");
          button.classList.add("odd");
        }

        button.innerText = noOfTimesClicked;
      }

      updateButton();
    </script>
  </body>
</html>