Init data type sample

2026-09-22 20:01:31 +00:00 · 2023-08-07 16:45:01 +07:00
parent 252315cbc2
commit ccafdecc10
2 changed files with 45 additions and 0 deletions
@@ -0,0 +1,12 @@
+<!DOCTYPE html>
+<html lang="en">
+  <head>
+    <meta charset="UTF-8" />
+    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
+    <title>Javascript Training</title>
+  </head>
+  <body>
+    <h1>Javascript Training</h1>
+    <script src="./index.js"></script>
+  </body>
+</html>
@@ -0,0 +1,33 @@
+// Data Types
+let isBoolean = true;
+console.log(isBoolean);
+
+// console.log(typeof false);
+console.log(typeof isBoolean);
+// console.log(typeof 18);
+// console.log(typeof 'String text');
+
+isBoolean = "String text";
+console.log(typeof isBoolean);
+
+let number = 18;
+console.log(number);
+console.log(typeof number);
+
+number = 27;
+console.log(typeof number);
+
+console.log(typeof null);
+
+// let, const and var
+let day = 30;
+day = 31;
+
+const birthYear = 2001;
+// birthYear = 1990;
+
+var myJob = "Student";
+myJob = "Grab bike";
+
+lastName = "Nezumi";
+console.log(lastName);