The zepto plugin requires zepto.data

[shinuza]

Call to $.data() without Zepto.data doesn't work with objects.

Thus the call:

      return input.data(_iCheck).o[state + (regular ? '' : 'Class')];

Will evaluate to

      return [object Object].o[state + (regular ? '' : 'Class')];

And property o of that string is obviously undefined, which triggers and error like Uncaught TypeError: Cannot read property 'uncheckedCheckboxClass' of undefined

Please update the doc to mention the need for the Zepto.data addon

Code is found at: https://github.com/fronteed/iCheck/blob/master/zepto.icheck.js#L389

[drgullin]

There's a if (input.data(_iCheck)) statement before this code, which should do the job.

iCheck requires a full-blown data() method https://github.com/madrobby/zepto/blob/master/src/data.js#files

Zepto docs are updated https://github.com/fronteed/iCheck#initialize

[shinuza]

Thanks!