@@ -0,0 +1,24 @@
+function jumpSearch(arr, target) {
+  let n = arr.length // size of array
+  let m = Math.round(Math.sqrt(n)) // size of block to be jumped
+
+  var jumpIndex = 0
+
+  while (arr[jumpIndex]) {
+    if (arr[jumpIndex] == target) {
+      return 'found target at ' + String(jumpIndex) + ' position'
+    } else {
+      jumpIndex += m
+    }
+  }
+
+  for (var prevIndex = jumpIndex; prevIndex > 0; prevIndex--) {
+    if (arr[prevIndex] == target) {
+      return 'found target at ' + String(prevIndex) + ' position'
+    } else if (arr[prevIndex] < target) {
+      break
+    }
+  }
+
+  return 'not found'
+}