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Handle a Rejected Promise with catch

curriculum/challenges/english/blocks/es6/5cdafbe72913098997531682.md

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--description--

catch is the method used when your promise has been rejected. It is executed immediately after a promise's reject method is called. Here’s the syntax:

js
myPromise.catch(error => {
  
});

error is the argument passed in to the reject method.

--instructions--

Add the catch method to your promise. Use error as the parameter of its callback function and log error to the console.

--hints--

You should call the catch method on the promise.

js
assert(
  __helpers.removeWhiteSpace(__helpers.removeJSComments(code)).match(/(makeServerRequest|\))\.catch\(/g)
);

Your catch method should have a callback function with error as its parameter.

js
assert(
  /\.catch\((function\(error\){|error|\(error\)=>)/.test(
    __helpers.removeWhiteSpace(__helpers.removeJSComments(code))
  )
);

You should log error to the console.

js
assert(
  /\.catch\((function\(error\){|error|\(error\)=>)/.test(
    __helpers.removeWhiteSpace(__helpers.removeJSComments(code))
  ) &&
    __helpers
      .removeWhiteSpace(__helpers.removeJSComments(code))
      .match(/\.catch\(.*?error.*?console.log\(error\).*?\)/)
);

--seed--

--seed-contents--

js
const makeServerRequest = new Promise((resolve, reject) => {
  // responseFromServer is set to false to represent an unsuccessful response from a server
  let responseFromServer = false;
    
  if(responseFromServer) {
    resolve("We got the data");
  } else {  
    reject("Data not received");
  }
});

makeServerRequest.then(result => {
  console.log(result);
});

--solutions--

js
const makeServerRequest = new Promise((resolve, reject) => {
  // responseFromServer is set to false to represent an unsuccessful response from a server
  let responseFromServer = false;
    
  if(responseFromServer) {
    resolve("We got the data");
  } else {  
    reject("Data not received");
  }
});

makeServerRequest.then(result => {
  console.log(result);
});

makeServerRequest.catch(error => {
  console.log(error);
});