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Course: JavaScript Basic
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JavaScript Basic

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JavaScript let

The let keyword enables you to declare a variable with block scope.

Example

var x = 10;
// Here x is 10
{
  let x = 2;
  // Here x is 2
}
// Here x is 10

JavaScript const

The const keyword allows you to declare a constant, which is a variable with a fixed value that cannot be reassigned.

Constants behave similarly to let variables, but their value cannot be changed once set.

Example

var x = 10;
// Here x is 10
{
  const x = 2;
  // Here x is 2
}
// Here x is 10