10 Differences in Rails and JavaScript

10 Differences in Rails and JavaScript

One big difference between Ruby and JavaScript is the falsey-ness of certain values.

1. Printing Out the Functions

In Ruby, we are familiar with “puts, print, p, and pp.” In Javascript, we use “console.log()” to have a return.

Ruby:

def who_lives_in_a_pineapple_under_the_sea
  puts "Spongebob Squarepants!"
end

JavaScript:

function whoLivesInAPineappleUnderTheSea(){
  console.log("Spongebob Squarepants!");
}

Note: Notice that calling the method is different in Ruby and JavaScript. Ruby uses “def” and “end” while JavaScript uses “function” with { } to open and close the method.

2. The Each Method

This method is a way to iterate through an array of elements in order to return, change, or manipulate them.

Ruby:

spongebob_chars = ["Spongebob", "Patrick", "Sandy", "Plankton"]
spongebob_chars.each {|single_char| puts single_char}
  #=> "Spongebob", "Patrick", "Sandy", "Plankton"

JavaScript:

let spongebobChars = ["Spongebob", "Patrick", "Sandy", "Plankton"]
spongebobChars.forEach(function(singleChar) {
  console.log(singleChar);
}
//=> "Spongebob", "Patrick", "Sandy", "Plankton"

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