如何查看 react-native 中变量的值？

Question

 fetch('https://localhost:3000/api/usuario/login', { method: 'POST', headers: { 'Accept': 'application/json', 'Content-Type': 'application/json', }, body: JSON.stringify({ userName: user, Userpassword: password console.log(Userpassword) //-- > BUT THIS DOSEN´ T WORK; }) });

I can see the value of variable userName for example, the value of userName .

Answer 1

You are putting it in the wrong location.

 console.log(Userpassword); // this ok fetch('https://localhost:3000/api/usuario/login', { method: 'POST', headers: { 'Accept': 'application/json', 'Content-Type': 'application/json', }, body: JSON.stringify({ userName: user, Userpassword: password }) });

Answer 2

Place the console statement outside. Like this:

console.log("User: ", user);
console.log("Password: ", password);

fetch('https://localhost:3000/api/usuario/login', {
  method: 'POST',
  headers: {
    'Accept': 'application/json',
    'Content-Type': 'application/json',
  },
  body: JSON.stringify({
    userName: user,
    Userpassword: password
  })
});

And you have to use the actual variable names: "user" and "password", not "userName" or "Userpassword". These are the keys of the object you are sending in the request.