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Jun 27th, 2017
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  1. // d1) Añade la resta...
  2. function resta(number1, number2) {
  3. var rest = number1 - number2
  4. console.log(rest) // The sum and rest of 7 and 3 is 10 and 4
  5. }
  6. resta(7,3)
  7.  
  8. // d2) Y la multiplicación
  9.  
  10. function mult (number1, number2){
  11. var multi = number1 * number2
  12. console.log(multi)
  13. }
  14.  
  15. mult (4,2) // 10, 4 and 21
  16. // d3) Por ultimo, la división
  17. function div (number1, number2){
  18. var divi = number1 / number2
  19. console.log(divi)
  20. }
  21.  
  22. div (4,2,21) // 10, 4, 21 and 2.3
  23. // d4) Ahora, intenta multiplicar un número por una string, que devuelve?
  24. function multstring (number1){
  25. var multistring = number1 * "hour";
  26. console.log(multistring)
  27. }
  28. multstring(10) // ....?!
  29. // e) Podemos controlar este error con un condicional if?
  30. function multstring2 (number1){
  31. var multistring2 = number1 * "hour"
  32. if (multistring2==="NaN"){console.log("OK")} else (console.log("Not OK"));
  33. }
  34. multstring2(10)
  35. console.log(10*"hour") // You can't do this operation!
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