fuction Dar(){ let num1 = 12; let num2 = 45; let result; result = num1 + num2; return result; } console.log(Dar);

The function `Dar()` is defined correctly, but there are a few issues with the code:

1. The function is missing a function name in the `console.log()` statement. It should be `console.log(Dar());` instead of `console.log(Dar);`. The parentheses are necessary to call the function and execute its code.

2. The function is not being called, so the result will not be logged to the console.

Here's the corrected code:

```javascript
function Dar() {
  let num1 = 12;
  let num2 = 45;
  let result;
  result = num1 + num2;
  return result;
}

console.log(Dar()); // This will log the result of the function to the console
```

However, it's worth noting that the function `Dar()` is not following best practices. It's a good idea to use a more descriptive function name, and to use a more modern JavaScript syntax. Here's an updated version of the code:

```javascript
function addNumbers() {
  const num1 = 12;
  const num2 = 45;
  const result = num1 + num2;
  return result;
}

console.log(addNumbers()); // This will log the result of the function to the console
```

In this updated version, I've used a more descriptive function name (`addNumbers`), and I've used the `const` keyword to declare the variables, which is a more modern and idiomatic way to write JavaScript code.