Testing type-of across frames in LiveScript

type-of.coffee

type-of = (typeof!)

y = type-of([1,2]) #=> 'Array'

x = type-of [1,2]  #=> ['Number', 'Number']

iframe =  document.createElement('iframe');
iframe.width = 50;
iframe.height= 50;

jQuery(iframe).appendTo(document.body);
iDoc = iframe.contentDocument || iframe.contentWindow.document;
iDoc.write """<script>\
      parent.iElement   = document.createElement('div');
      parent.iArguments = (function(){ return arguments; })(1, 2, 3);
      parent.iArray     = [1, 2, 3];
      parent.iString    = 'hello';
      parent.iNumber    = 100;
      parent.iFunction  = (function(){});
      parent.iDate      = new Date();
      parent.iRegExp    = /hi/;
      parent.iNaN       = NaN;
      parent.iNull      = null;
      parent.iUndefined = undefined;
    </script>"""
iDoc.close();

type-of iArray

iArray instanceof Object

type-of felix

type-of Cat

type-of Dog

type-of iArguments

type-of iNaN

type-of iNull

# typeof! nothing

console.log iArray instanceof Array

console.log iArray instanceof Object