Data types
var varName = value;
<script src = "mysccript,js"></script>
== //compares value
=== //compares both value and type
//same for other comparisons
!==, >==, <==, ...
!, &&, ||
for(letter of arr){
console.log(letter)
}
arr.forEach(console.log())
var info = {make:"car", mask:"cover"}
info["make"] //need quotation marks
console.dir(info) //to see entire object
for (key in carInfo){
console.log(key) //key
console.log(carInfo[key]) //value
}
For more info about javascript
https://developer.mozilla.org/en-US/