Introduction to JavaScript Type Conversions

Implicit Type Conversions

JavaScript performs implicit type conversions automatically when it tries to operate on values of different types. For example, if you try to add a string and a number together, JavaScript will convert the number to a string and then concatenate the two strings together. Here’s an example:

var str = "Hello";
var num = 123;

var result = str + num;

console.log(result); // "Hello123"

In this example, the number 123 is implicitly converted to the string "123" so that it can be concatenated with the string "Hello".

Explicit Type Conversions

JavaScript also allows you to perform explicit type conversions using the parseInt, parseFloat, and String functions.

The parseInt and parseFloat functions are used to convert a string to a number. Here’s an example:

var str = "123";
var num = parseInt(str);

console.log(num); // 123

In this example, the parseInt function is used to convert the string "123" to the number 123.

The String function is used to convert a value to a string. Here’s an example:

var num = 123;
var str = String(num);

console.log(str); // "123"

In this example, the String function is used to convert the number 123 to the string "123".

Conclusion

In this guide, we’ve covered the basics of JavaScript type conversions, including implicit and explicit type conversions. Type conversions are an important part of programming, and understanding how they work can help you write more effective code. We hope that this guide has helped you understand the basics of JavaScript type conversions and given you some ideas for how to use them in your own projects.