Type Coercion in JavaScript

• Type coercion in JavaScript refers to the process of converting one data type to another implicitly, in situations where the expected data type differs from the actual data type.

• This can happen in various contexts, such as mathematical operations or comparisons between values of different data types.

• JavaScript has a set of rules for how type coercion is performed, based on the specific data types and operators involved.

Here are some examples:

• String concatenation: When you use the + operator to concatenate a string with a non-string value, the non-string value is converted to a string.

For example:

    var str = "hello";

    var num = 42;

    var result = str + num; // "hello42"

• In this example, the number 42 is converted to a string and then concatenated with the string "hello".

• Comparison operators: When you use comparison operators like == or != to compare values of different data types, JavaScript will attempt to convert them to a common data type before making the comparison.

For example:

    var num1 = 5;

    var str = "5";

    if (num1 == str) { // true

      // ...

    }

• In this example, the numeric 5 is converted to the string 5, and then compared to the string 5 using the == operator. The result is true because the values are considered equal. It's important to be aware of the rules for type coercion in JavaScript, as they can sometimes lead to unexpected results or bugs in your code.

• It's generally recommended to use explicit type conversion whenever possible, rather than relying on implicit type coercion.