javascript-course/2-copy-of-code/lesson-18/lesson18.html at bbfd75199bd492ee75aef9cab8d7ff163a61025c · SuperSimpleDev/javascript-course · GitHub

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<html>
  <body>
    <script>
      /*
      const xhr = new XMLHttpRequest();

      xhr.addEventListener('load', () => {
        console.log(xhr.response);
      });

      xhr.open('GET', 'https://supersimplebackend.dev/greeting');
      xhr.send();
      */

      /*
      fetch(
        'https://supersimplebackend.dev/greeting'
      ).then((response) => {
        return response.text();
      }).then((text) => {
        console.log(text);
      });
      */

      /*
      async function getGreeting() {
        const response = await fetch('https://supersimplebackend.dev/greeting');
        const text = await response.text();
        console.log(text);
      }
      getGreeting();
      */

      /*
      async function postGreeting() {
        const response = await fetch('https://supersimplebackend.dev/greeting', {
          method: 'POST',
          headers: {
            'Content-Type': 'application/json'
          },
          body: JSON.stringify({
            name: 'SuperSimpleDev'
          })
        });

        const text = await response.text();
        console.log(text);
      }
      postGreeting();
      */

      /*
      async function getAmazon() {
        try {
          const response = await fetch('https://amazon.com');
          const text = await response.text();
          console.log(text);

        } catch (error) {
          console.log('CORS error. You request was blocked by the backend.');
        }
      }
      getAmazon();
      */

      async function postGreeting() {
        try {
          const response = await fetch('https://supersimplebackend.dev/greeting', {
            method: 'POST',
            headers: {
              'Content-Type': 'application/json'
            }
          });

          if (response.status >= 400) {
            throw response;
          }

          const text = await response.text();
          console.log(text);

        } catch (error) {
          if (error.status === 400) {
            const errorMessage = await error.json();
            console.log(errorMessage);
          } else {
            console.log('Network error. Please try again later.');
          }
        }
      }
      postGreeting();
    </script>
  </body>
</html>