About this document
Understanding JavaScript Variable Types by Dhruv kashyap is a document available to read on EtoBox.
Variables in JavaScript can be declared with var, let, or const. Var declares function-scoped variables that are hoisted, while let and const declare block-scoped variables. Const variables must be assigned a value right away and cannot be reassigned, while let variables can be reassigned but not redeclared within the same block. Let and const are now preferred over var due to better scoping rules and more predictable behavior.
- Author
- Dhruv kashyap
- Language
- EN