Core Code
Core Code Modern Dev Handbook

Scope Chain Example

JavaScript searches for variables through the scope chain.

Preview

Code

<script>
let globalVar = "Global";

function first(){
  function second(){
    console.log(globalVar);
  }
  second();
}

first();
</script>

More JS Scope Examples (7)

example Global Scope Variable open example example Local Scope Variable open example example Function Scope Example open example example Block Scope with let open example example Block Scope with const open example example Variable Shadowing open example example Nested Scope Example open example