minor

1-js/4-data-structures/10-arguments-pseudoarray/head.html

@@ -0,0 +1,14 @@
+<script>
+function copy() {
+  var dst = arguments[0];
+
+  for (var i = 1; i < arguments.length; i++) {
+    var arg = arguments[i];
+    for (var key in arg) {
+      dst[key] = arg[key];
+    }
+  }
+
+  return dst;
+}
+</script>