Missing semicolons and var declarations.

[mattduggan]

Line 95, missing semicolon:

var checked = obj.element.prop('checked')

Line 226, missing comma in var chain:

spanPadding = this.$disabledSpan.innerWidth() - this.$disabledSpan.width()
handleMargins    = this.$handle.outerWidth() - this.$handle.innerWidth();

fn _autoresize is also missing var declarations for handleWidth and spanWidth.

I've revised these but do not have privileges to submit a PR.