Explain common code blocks in JavaScript switch statement?

Javascript Web Development Object Oriented Programming

Following is the code to implement common code blocks in JavaScript switch statement −

Example

<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>Document</title>
<style>
   body {
      font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
   }
   .result {
      font-size: 20px;
      font-weight: 500;
   }
</style>
</head>
<body>
<h1>JavaScript Switch statement</h1>
Enter day 1-7<input type="text" class="day" /><button class="Btn">
CHECK
</button>
<div style="color: green;" class="result"></div>
<h3>
Click on the above button to check which day it is
</h3>
<script>
   let dayVal = document.querySelector(".day");
   let resEle = document.querySelector(".result");
   document.querySelector(".Btn").addEventListener("click", () => {
      switch (parseInt(dayVal.value)) {
      case 1:
         resEle.innerHTML = "It's monday";
         break;
      case 2:
         resEle.innerHTML = "It's tuesday";
         break;
      case 3:
         resEle.innerHTML = "It's wednesday";
         break;
      case 4:
         resEle.innerHTML = "It's thursday";
         break;
      case 5:
         resEle.innerHTML = "It's friday";
         break;
      case 6:
         resEle.innerHTML = "It's saturday";
         break;
      case 7:
         resEle.innerHTML = "It's sunday";
         break;
      default:
         resEle.innerHTML = "Enter a value between 1 - 7";
         break;
   }
});
</script>
</body>
</html>