Whambap

bench.js

@@ -0,0 +1,41 @@
+function dataset() {
+    return new Array(4000).fill().map(() => "fusse".repeat(5));
+}
+
+const simCount = 100_000;
+
+const start = Date.now();
+
+const target = "not found";
+
+for (let sim = 0; sim < simCount; sim++) {
+    const ds = dataset();
+
+    // const len = ds.length;
+    // for (let i = 0; i < len; i++) {
+    //     // pretend to do work on the data elements
+    //     const el = ds[i];
+    //     if (el === target) {
+    //         console.log("foo");
+    //     }
+    // }
+
+    // ds.forEach((el) => {
+    //     if (el === target) {
+    //         console.log("foo");
+    //     }
+    // });
+
+    while (ds.length > 0) {
+        let el = ds.pop();
+        if (el === target) {
+            console.log("foo");
+        }
+    }
+}
+
+console.log("time: %f msec", Date.now() - start);
+
+// for-loop  : 8568 msec
+// .forEach  : 8551 msec
+// pop()     : 8765 msec