Init operators and comparisons sample

2026-09-22 13:38:43 +00:00 · 2023-08-07 16:52:33 +07:00
parent ccafdecc10
commit 953456fe4a
2 changed files with 52 additions and 0 deletions
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+<!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>
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+// Basic Operators
+// Math operators
+const now = 2023;
+const ageNezumi = now - 2001;
+const ageSarah = now - 2006;
+console.log(ageNezumi, ageSarah);
+
+console.log(ageNezumi * 2, ageNezumi / 10, 2 ** 3);
+// 2 ** 3 means 2 to the power of 3 = 2 * 2 * 2
+
+const firstName = "Phan";
+const lastName = "Nezumi";
+console.log(firstName + " " + lastName);
+
+// Assignment operators
+let a = 10 + 5; // 15
+a += 10; // a = a + 10 = 25
+a *= 4; // a = a * 4 = 100
+a++; // a = a + 1
+a--;
+a--;
+console.log(a);
+
+// Comparison operators
+console.log(ageNezumi > ageSarah); // >, <, >=, <=
+console.log(ageSarah >= 18);
+
+console.log(now - 1991 > now - 2018);
+
+////////////////////////////////////
+// Operator Precedence
+
+console.log(now - 2001 > now - 2006);
+
+let t, u;
+t = u = 25 - 10 - 5; // x = y = 10, x = 10
+console.log(t, u);
+
+const averageAge = (ageNezumi + ageSarah) / 2;
+console.log(ageNezumi, ageSarah, averageAge);