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Why fn the first parameter is null #36

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Why fn the first parameter is null#36

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@iizhangchao
iizhangchao
opened on Aug 1, 2017
  window[id] = function(data){
    debug('jsonp got', data);
    cleanup();
    if (fn) fn(null, data);
  };

Why fn the first parameter is null

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  1. ifmos commented on Aug 29, 2017

    @ifmos
    ifmos
    on Aug 29, 2017

    callback fn has 2 parameters (err,data)

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