Comparison with the Equality Operator legia

Comparison with the Equality Operator legia
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#1

Tell us what’s happening:
Hi I passed the test but I wonder how do the computer knows that 12 is equal to val when its not a number?

Your code so far


// Setup
function testEqual(val) {
  if (val == 12) { // Change this line
    return "Equal";
  }
  return "Not Equal";
}

// Change this value to test
testEqual(10);

Link to the challenge:
https://learn.freecodecamp.org/javascript-algorithms-and-data-structures/basic-javascript/comparison-with-the-equality-operator


#2

Of course val is a number. val represents the number passed into the function.

In the example call of the function below, the number 10 is passed into the function, so val is 10. Since 10 == 12 evaluates to false, the if statement block of code is not executed and the next line (return “Not Equal”:wink: gets executed instead.

testEqual(10);

In the example call of the function below, the number 12 is passed into the function, so val is 12. Since 12 == 12 evaluates to true, the if statement block of code is executed, so the line (return “Equal”) gets executed.

testEqual(12);

#3

In the compiler it searchers back up to the last time the variable was changed and comes back and uses that.


#4

Thank you guys :slight_smile: