local variable data1 referen

ces to a specific value within a specific function or block of code. It is not accessible or visible outside of that function or block. It is used to store temporary or data that is only needed within that specific context.

For example, consider the following code snippet:

function example() {
  let data1 = 10;
  console.log(data1); // Output: 10
}

example();
console.log(data1); // Error: data1 is not defined

In this example, `data1` is a local variable within the `example` function. It can be accessed and used within the function, but it cannot be accessed outside of it. The second `console.log` statement outside the function would result in an error since `data1` is not defined in that context.

Local variables are important for encapsulation and maintaining data integrity within functions or blocks of code. They help in organizing and isolating data within specific scopes, preventing unintended access or modifications from other parts of the code.