Hello 
This is the third day of #30 days of javascrip coding, at this day i learned that
1-I used the alert function to warn the user about a specific message
2- I used document.write function to write massage that appears on the user screen but it is not the best tool to do that job
3- I used console.log function to print a massage on the console
to check the code 
4- I used console.error function to write error massage that appears on the user screen when there is Error in the code
5-I used console.table to print data Printing data that written in the form of a array or in the form of a table with each element numbered.
this is the codes that i used



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