Init arrays sample

2026-09-22 13:38:43 +00:00 · 2023-08-07 17:09:13 +07:00
parent b03e6f62f0
commit 13e449c793
2 changed files with 62 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 +1,50 @@
+// Introduction to Arrays
+
+const teammates = ["Nezumi", "Khue", "Dat"];
+console.log(teammates);
+
+const year = new Array(2001, 1998, 2004, 2005);
+
+console.log(teammates[0]);
+console.log(teammates[2]);
+
+console.log(teammates.length);
+console.log(teammates[teammates.length - 1]);
+
+teammates[2] = "Huy";
+console.log(teammates);
+
+const firstName = "Jonas";
+const jonas = [firstName, "Schmedtmann", 2037 - 1991, "teacher", teammates];
+console.log(jonas);
+console.log(jonas.length);
+
+// Basic Array Operations (Methods)
+// Add elements
+const newLength = teammates.push("Lien");
+console.log(teammates);
+console.log(newLength);
+
+teammates.unshift("Dat");
+console.log(teammates);
+
+// Remove elements
+teammates.pop(); // Last
+const popped = teammates.pop();
+console.log(popped);
+console.log(teammates);
+
+teammates.shift(); // First
+console.log(teammates);
+
+console.log(teammates.indexOf("Nezumi"));
+console.log(teammates.indexOf("Khue"));
+
+teammates.push(23);
+console.log(teammates.includes("Nezumi"));
+console.log(teammates.includes("Khue"));
+console.log(teammates.includes(23));
+
+if (teammates.includes("Nezumi")) {
+  console.log("You have teammate who is name Nezumi");
+}