What is Strongly Typed and give an example, if possible, of something that is not strongly typed

What is Strongly Typed and give an example, if possible, of something that is not strongly typed. Why is it not?

The Correct Answer and Explanation is :

Strongly Typed

A language is considered strongly typed if it enforces strict rules about the types of variables and operations, meaning that a variable of one type cannot be automatically converted or coerced into another type without explicit instruction. In strongly typed languages, if a variable is declared with a specific data type, such as an integer or a string, the language will not allow operations or functions that would cause a mismatch between types. For instance, you cannot add a string to a number without explicitly converting the types in most strongly typed languages.

Example of a Strongly Typed Language:

An example of a strongly typed language is Java. In Java, the type of each variable is strictly defined, and the language does not implicitly convert between incompatible types. For example, trying to add a string to an integer directly will result in a compilation error:

int number = 5;
String text = "Hello";
// The following line will cause a compilation error
int result = number + text;  // Error: incompatible types: String cannot be converted to int

In Java, you would need to explicitly convert one type to another:

int number = 5;
String text = "Hello";
String result = text + number;  // This is allowed because both are treated as strings in this context

Example of a Not Strongly Typed Language:

An example of a language that is not strongly typed is JavaScript. JavaScript performs type coercion, meaning it automatically converts between types in certain operations. For example, you can add a string and a number together without explicit conversion:

let number = 5;
let text = "Hello";
let result = text + number;  // Output: "Hello5"

In this case, JavaScript converts the number to a string before performing the addition, which is an automatic type conversion (or coercion).

Why is JavaScript Not Strongly Typed?

JavaScript is not strongly typed because it allows implicit type conversions between different data types. This flexibility can lead to unexpected behavior, where the types are automatically converted without the programmer’s intervention. This can be useful in some cases, but it can also cause subtle bugs and errors that might be hard to track down, especially in larger applications. For example, trying to compare a string and a number may not behave as expected, as JavaScript will perform automatic type conversion:

console.log(5 == "5");  // true, because the string "5" is converted to a number