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10 days Javascript: Data Types

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Day 0: Data Types

Solution for:

https://www.hackerrank.com/challenges/js10-data-types/problem

Task

Variables named firstInteger, firstDecimal, and firstString are declared for you in the editor below. You must use the + operator to perform the following sequence of operations:

  1. Convert secondInteger to an integer (Number type), then sum it with firstInteger and print the result on a new line using console.log.
  2. Convert secondDecimal to a floating-point number (Number type), then sum it with firstDecimal and print the result on a new line using console.log.
  3. Print the concatenation of firstString and secondString on a new line using console.log. Note that firstString must be printed first.

Read original instruction on HackerRank
Instructions from:

/**
*   The variables 'firstInteger', 'firstDecimal', and 'firstString' are declared for you -- do not modify them.
*   Print three lines:
*   1. The sum of 'firstInteger' and the Number representation of 'secondInteger'.
*   2. The sum of 'firstDecimal' and the Number representation of 'secondDecimal'.
*   3. The concatenation of 'firstString' and 'secondString' ('firstString' must be first).
*
* Parameter(s):
*   secondInteger - The string representation of an integer.
*   secondDecimal - The string representation of a floating-point number.
*   secondString - A string consisting of one or more space-separated words.
**/
function performOperation(secondInteger, secondDecimal, secondString) {
  // Declare a variable named 'firstInteger' and initialize with integer value 4.
  const firstInteger = 4;

  // Declare a variable named 'firstDecimal' and initialize with floating-point value 4.0.
  const firstDecimal = 4.0;

  // Declare a variable named 'firstString' and initialize with the string "HackerRank".
  const firstString = 'HackerRank ';

  // Write code that uses console.log to print the sum of the 'firstInteger' and 'secondInteger' (converted to a Number        type) on a new line.
  console.log(firstInteger + Number(secondInteger));

  // Write code that uses console.log to print the sum of 'firstDecimal' and 'secondDecimal' (converted to a Number            type) on a new line.
  console.log(firstDecimal + Number(secondDecimal));

  // Write code that uses console.log to print the concatenation of 'firstString' and 'secondString' on a new line. The        variable 'firstString' must be printed first.
  console.log(firstString + secondString);

}