NotesonJavascript.txt

1. All numbers are floats
2. You cannot use numeric operators with strings and numbers (“Bob” x 4)
3. Javascript does not use destructive methods generally - it returns a new object
4. If you do not put ‘var’ before a variable definition, the variable will be global
5. var and functions are defined in turtleCase
6. No string interpolation
7. No implicit return value; need explicit return
8. === is comparison operator vs == in Ruby
9. No ‘unless’ && ‘else if’ not ‘elsif’
10. Cannot access from the end of an array using negative index
11. No first, last, or empty methods for arrays - use length
12. No shovel << operators for arrays - use push & pop or shift & unshift
13. No hash BUT object literal
14. Properties are like attr_accessors
15. Only ‘for’, ‘do’, ‘while’ loops
16. ‘for’ loop syntax:
for (var i = 0; i < n; i++) {
 // block of code
}
        OR

for (i in nums) {
 console.log(i);
}


1. Callback functions (functions passed as arguments to other functions)