What are some examples of type inference in JavaScript?

What are some examples of type inference in JavaScript?

Type inference in JavaScript occurs when the engine determines the type of a variable automatically. For example, if you write let x = 5;, JavaScript infers that x is a number.

Can you give me more examples?

Sure! Another example is when you declare a variable without an explicit type, like let name = 'Alice';. Here, JavaScript infers that name is a string.

What about functions? How does type inference work there?

In functions, if you return a value, JavaScript infers the return type based on the value returned. For instance, if a function returns a boolean, the inferred type is boolean.

Are there any limitations to type inference?

Yes, type inference can lead to unexpected results if not careful. For example, if you change a variable's value to a different type, it can cause bugs.