> For the complete documentation index, see [llms.txt](https://demirels-organization.gitbook.io/javascript-tutorial/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://demirels-organization.gitbook.io/javascript-tutorial/implicit-conversion-and-falcy-values.md).

# Implicit Conversion & Falcy Values

Implicit conversion refers to the automatic type coercion that occurs when operators or functions expect a certain type of value, but are given a different type. For example, the addition operator (+) expects numbers as operands, but if one of the operands is a string, JavaScript will try to convert the string to a number before performing the addition. This can lead to some unexpected behavior if you are not careful.

Falsy values are values that evaluate to false when converted to a boolean. There are six falsy values in JavaScript:

* false
* 0 (zero)
* "" (empty string)
* null
* undefined
* NaN (not a number)

All other values, including objects and arrays, are considered truthy. You can use these falsy values to your advantage by using them in conditional statements to check whether a value is "truthy" or "falsy".

For example:

```javascript
const x = 0;
if (x) {
  console.log('x is truthy');
} else {
  console.log('x is falsy');
}
// Output: x is falsy

const y = 'hello';
if (y) {
  console.log('y is truthy');
} else {
  console.log('y is falsy');
}
// Output: y is truthy
```