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How can I send data to the server and get a response using my own application?

I am trying to learn how to react natively by creating a simple login page using an api call. Where will I post the username and password to the api and this will give me the answer. But I cannot do this. Well, I am sharing my code here .....

var myRequest = new Request('<my API >', {method: 'POST', body: '{"username":this.state.uName , "password":this.state.pwd}'});
    fetch(myRequest).then(function(response) {
        alert('Res'+response);
    }).then(function(response) {
        alert('Blank'+response);
    })
    .catch(function(error) {
        alert('Error'+error);
    });

I think the path of passing my username and password to the server is wrong. Please give me some idea, then I can figure out what is wrong here.

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4 answers 


var data = {
   "username": this.state.username,
   "password": this.state.password
}

fetch("https://....", {
   method: "POST",
   headers: headers,
   body:  JSON.stringify(data)
})
.then(function(response){ 
 return response.json();   
})
.then(function(data){ 
console.log(data)
});


Hope this helps.

+5


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You need Stringify json data to send the request as a Post method with Json parameters, as you are trying to do ... Here is a sample code for how to encode the data before requesting a response



fetch('https://mywebsite.com/endpoint/', {  
  method: 'POST',
  headers: {
    'Accept': 'application/json',
    'Content-Type': 'application/json',
  },
  body: JSON.stringify({
    firstParam: 'yourValue',
    secondParam: 'yourOtherValue',
  })
})
+1


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As the reviewers have stated, you just need to validate your JSON Body. In general, I suggest you include, for example, api sauce on the stack. It is a comprehensive wrapper around the axios library, providing standardized errors and a key ok

for quick checks.

0


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Here is some sample code for login:

fetch(<hostURL>, {
        method: 'POST',
        headers: { 'Accept': 'application/json','Content-Type': 'application/json',},
        body: JSON.stringify({ userName: <userName> ,Password: <Password>,})
    }).then((response) => response.json())
    .then((responseData) => {
        console.log(responseData);
    }).catch((error) => {
        console.log("Error");
    });
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