1 00:00:00,740 --> 00:00:13,830 Hell no they are welcome to this video on on to find datatype in Javascript a variable without value 2 00:00:14,180 --> 00:00:18,600 is referred to as on defining it. 3 00:00:18,990 --> 00:00:21,090 What is a variable. 4 00:00:21,360 --> 00:00:31,740 Well in general computer programming and being javascript variables are used to store information which 5 00:00:31,740 --> 00:00:35,050 can be referenced at a later time. 6 00:00:35,600 --> 00:00:43,770 So where by a variable is created and does not have value. 7 00:00:43,830 --> 00:00:57,780 It is referred to as on defined B on defined key word it can also be use to empty variable of its value. 8 00:00:57,780 --> 00:01:05,650 So if you've got a variable that has a value you can also use the undefined key word to clear that value 9 00:01:07,860 --> 00:01:10,000 in this quick video. 10 00:01:10,200 --> 00:01:16,670 I explain what B on defined data type is in javascript. 11 00:01:16,770 --> 00:01:21,570 It refers to a variable without value. 12 00:01:22,020 --> 00:01:26,760 B are usually identified with the key word on defined. 13 00:01:26,880 --> 00:01:33,870 So wherever you see a variable in javascript that hasn't been defined. 14 00:01:33,870 --> 00:01:37,990 It will come up with the on defined key word. 15 00:01:38,400 --> 00:01:41,080 Thank you so much for watching. 16 00:01:41,130 --> 00:01:43,910 I hope the video has made sense. 17 00:01:44,070 --> 00:01:51,600 If you happen please drop me a message and I will be more than happy to explain further. 18 00:01:51,930 --> 00:01:52,860 Thank you. 19 00:01:52,860 --> 00:01:54,040 Bye for now.