javascript = only language that can (the only one that can do frontend)
  developer.mozilla.or (authority on javascript)

 It has to be backward compatible.

 gighcharts
 jquery is in 90% of websites


 in javascript function is using as var
 var = to define a variable

 } = operates as end

 console.log(index) = this is what passed on to the console

 === this is the equal to sign


 whenever calling a function must have the parenthesis

 // = comment out


 functions are methods
 javascript