javascript-amazon/lesson18.html at main · praneeth-etta/javascript-amazon · GitHub

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<!DOCTYPE html>
<html>
  <head>

  </head>
  <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: 'Praneeth'
          })
        });
        const text = await response.text();
        console.log(text);
      }
      postGreeting();
      */
      /*
      async function getGreeting(){
        try{
          const response = await fetch('https://amazon.com');
          const text = await response.text();
          console.log(text);
        }catch(error){
          console.log('blocked by amazon');
        }
      }
      getGreeting();
      */
      async function postGreeting() {
        try{
          const response = await fetch('http://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')
          }
        }
      }
      postGreeting();


    </script>
  </body>
</html>