coercion.md

Coercion

The conversion of a value between two types.

Example:

var a = "42";
var b = Number(a);

console.log(a); // "42"
console.log(b); // 42

Using the built-in function Number() is an explicit coercion. An implicit coercion is when you try to convert two values that are not of the same type. Example: "99" and 99;

JavaScript helps you compare these two values using the == loose equals operator. When writing "99" == 99, JS will convert the left-hand side to its number equivalent, so the expression will equal true.

Implicit coercion can be confusing.