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<!DOCTYPE html>
<html>
  <head>
    <meta charset="utf-8">
    <meta name="viewport" content="minimum-scale=1.0, width=device-width, maximum-scale=1.0, user-scalable=no" />
    <title>Learning React Chapter 2 Samples</title>
  </head>
  <body>
    <h1>Open the Console</h1>
  </body>
</html>
 
// ES6 lexical variable scoping with let
var topic = "JavaScript"
if (topic) {
  let topic = "React"
  console.log('block', topic)
}
console.log('global', topic)
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