How to send json to server in react native?

Question

JavaScript

Everyone is talking only about how to get json? How to send data to the site (Web API)? What function in javascript does fetch seem to accept? (do not judge strictly the first time I write Javascript)

Answer 1

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)
});