[Exmaple] What the f*ck JavaScript

app/examples/wtfjs.recho.js

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+/**
+ * @title What the f*ck JavaScript?
+ * @author Bairui Su
+ * @created 2025-09-25
+ * @pull_request 123
+ * @github pearmini
+ * @thumbnail_start 26
+ */
+
+/**
+ * ============================================================================
+ * =                           What the f*ck JavaScript?                      =
+ * ============================================================================
+ *
+ * JavaScript is a powerful language, flexible syntax and a large ecosystem
+ * with a great community. However, it also has some quirks and unexpected
+ * behaviors that can be dangerous but funny.
+ * 
+ * Here are some of the examples from https://github.com/denysdovhan/wtfjs.
+ */
+
+//➜ true
+echo([] == ![]);
+// https://github.com/denysdovhan/wtfjs?tab=readme-ov-file#-is-equal-
+
+//➜ false
+echo(0.1 + 0.2 === 0.3);
+// https://github.com/denysdovhan/wtfjs?tab=readme-ov-file#precision-of-01--02
+
+//➜ "baNaNa"
+echo("b" + "a" + +"a" + "a");
+// https://github.com/denysdovhan/wtfjs?tab=readme-ov-file#banana
+
+//➜ "fail"
+echo(
+  (![] + [])[+[]] +
+  (![] + [])[+!+[]] +
+  ([![]] + [][[]])[+!+[] + [+[]]] +
+  (![] + [])[!+[] + !+[]]
+)
+// https://github.com/denysdovhan/wtfjs?tab=readme-ov-file#its-a-fail
+
+//➜ 15
+echo(parseInt("f*ck", 16));
+// https://github.com/denysdovhan/wtfjs?tab=readme-ov-file#parseint-is-a-bad-guy
+
+//➜ "1,2,34,5,6"
+echo([1, 2, 3] + [4, 5, 6]);
+// https://github.com/denysdovhan/wtfjs?tab=readme-ov-file#adding-arrays
+
+//➜ "first"
+foo: {
+  echo("first");
+  break foo;
+  echo("second");
+}
+// https://github.com/denysdovhan/wtfjs?tab=readme-ov-file#labels
+
+//➜ 1
+//➜ 2
+//➜ 3
+//➜ 4
+//➜ 5
+a: b: c: d: e: f: g: echo(1), echo(2), echo(3), echo(4), echo(5);
+// https://github.com/denysdovhan/wtfjs?tab=readme-ov-file#labels
+
+//➜ [ 1, 10, 3 ]
+echo([10, 1, 3].sort());
+// https://github.com/denysdovhan/wtfjs?tab=readme-ov-file#default-behavior-arrayprototypesort