variable with html code: readable, but not writable

variable with html code: readable, but not writable

  1. var = "some html code"
  2. $(var).find('#some_id').val()
That works, and I'm getting value,
but!
  1. $(var).find('#some_id').val('123')
Doesn't change var

var.replace is a little bit inconvenient for such tasks.