In javascript if we want to integrate rest api we can use below code is for get api.

async function getData() {
  const url = "https://apirequest.in/users/";
  try {
    const response = await fetch(url);
    if (!response.ok) {
      throw new Error(`Response status: ${response.status}`);
    }

    const json = await response.json();
    console.log(json);
  } catch (error) {
    console.error(error.message);
  }
}
                

In javascript if we want to integrate rest api we can use below code is for POST api.

 
async function postData() {
  const url = "https://apirequest.in/users/";
  try {
    let data = {
      "email":"sampleemail@gmail.com",
      "password":"samplepassword"
    }
    const response = await fetch(url,{"method":"POST",body:JSON.stringify(data)});
    if (!response.ok) {
      throw new Error(`Response status: ${response.status}`);
    }

    const json = await response.json();
    console.log(json);
  } catch (error) {
    console.error(error.message);
  }
}