jQuery block wrapping step by step?

Question

JavaScript

There is :

.container
  .a
  .b
  .a
  .b
  .a
  .b

Need:

.container
  .warp
    .a
    .b
  .warp
    .a
    .b
  .warp
    .a
    .b

Answer 1

jsfiddle.net/wLcvbj4j