Lesson Use Conditional Logic with If Statements

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Created by Rafase282

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Use Conditional Logic with If-Else Statements

We can use if statements in JavaScript to only execute code if a certain condition is met.

Each if statement requires a boolean condition to evaluate. If the boolean evaluates to true, the statements inside the curly braces will execute. Otherwise, if it evaluates to false, the code will not execute.

Example:

function test(myVal) {
  if (myVal > 10) {
     return "Greater Than";
  }
  return "Not Greater Than";
}

If myVal is greater than 10, the function will return "Greater Than". If it is not, the function will return "Not Greater Than".

Furthermore, if you add an else statement you can have it do something different in case that myVal is equal or less than 10 inthe following way:

function test(myVal) {
  if (myVal > 10) {
     return "Greater Than";
  } else {
    // do something else
  }
  return "Not Greater Than";
}

You could take it even further and use an else-if and then another else for nesting once you are more familiar with conditions.

if (true) {
  // do something
}else if (true) {
  // otherwise check this and do that
}else {
  // otherwise do this instead
}

//consitune with more code here