rust?

primes/javascript/primes.js

@@ -0,0 +1,41 @@
+
+const times = [];
+
+for (let i = 0; i < 10; i++) {
+    console.log(`staring ${i} run`)
+    const startTime = Date.now();
+    primes(10_000_000)
+    const totalTime = Date.now() - startTime;
+    times.push(totalTime);
+}
+
+const average = times.reduce((a, b) => a + b, 0) / times.length;
+console.log(`Average time was ${average}ms`)
+
+
+
+function primes(max) {
+    const primesList = [];
+
+    primesList.push(2);
+
+    for (let i = 3; i < max; i++) { //go through all numbers
+        let isPrime = true;
+        for (let j = 0; j < primesList.length; j++) { //test each number
+            let prime = primesList[j];
+            if (prime > Math.sqrt(i)) {
+                break;
+            }
+            if (i % prime === 0) { //i = test number, j = some known prime
+                isPrime = false;
+                break;
+            }
+        }
+
+        if (isPrime) {
+            primesList.push(i);
+        }
+    }
+
+    return primesList;
+}