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JavaScript

What's the difference of var and let?

In my courses about JavaScript, i cant understand the difference between var and let. They just look the same. Please help me understand this.

1 Answer

Steven Parker
Steven Parker
230,248 Points

The keywords "var" and "let" both create new variables, with some slight (but often very important) differences. For example, "var" creates variables with function scope, and "let" creates them with block scope. Variables created with "var" are "hoisted", but those made with "let" are not.

For more details on these and other differences, see the MDN pages for var and let.