How do I pass a value to an external variable?

• 0
  Hello. Why, in this code, alert outside .then () outputs undefined value, although the variable itself is declared outside this construction.
  

  <meta charset="utf-8">
  <script type="text/javascript">
      var USD
      fetch('https://www.cbr-xml-daily.ru/daily_json.js')
          .then(data => data.json(data))
          .then(({
              Valute: {
                  USD
              }
          }) => {
  
              USD = `${USD.Value}`
              alert(USD)
          })
      alert(USD)
  
  </script>

  
  I will need to work with this variable further in the code. I don't know JS well. I couldn't find the answer in Google

  JavaScript Anonymous, Apr 14, 2019

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1 Answers
• 0
  Because this is how asynchronous operations work. Use async / await for convenience.

  Phoebe Vincent

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