freeCodeCamp Challenge Guide: Logical Order in If Else Statements

freeCodeCamp Challenge Guide: Logical Order in If Else Statements
0

#1

Order is important in if, else if and else statements.

The loop is executed from top to bottom so you will want to be careful of which statement comes first.

Take these two functions as an example.

Examples:

function foo(x) {
  if (x < 1) {
    return "Less than one";
    } 
  else if (x < 2) {
    return "Less than two";
    } 
  else {
    return "Greater than or equal to two";
    }
}

And the second just switches the order of the statements:

function bar(x) {
  if (x < 2) {
    return "Less than two";
    } 
  else if (x < 1) {
    return "Less than one";
    }
  else {
    return "Greater than or equal to two";
    }
}

While these two functions look nearly identical, if we pass a number to both we get different outputs.

foo(0) // "Less than one" 

bar(0) // "Less than two"

So be careful while using the if, else if and else statements and always remember that these are executed from top to bottom. Keep this in mind placing your statements accordingly so that you get the desired output.


#2