--description--
A promise has three states: pending
, fulfilled
, and rejected
. The promise you created in the last challenge is forever stuck in the pending
state because you did not add a way to complete the promise. The resolve
and reject
parameters given to the promise argument are used to do this. resolve
is used when you want your promise to succeed, and reject
is used when you want it to fail. These are methods that take an argument, as seen below.
const myPromise = new Promise((resolve, reject) => {
if(condition here) {
resolve("Promise was fulfilled");
} else {
reject("Promise was rejected");
}
});
The example above uses strings for the argument of these functions, but it can really be anything. Often, it might be an object, that you would use data from, to put on your website or elsewhere.
--instructions--
Make the promise handle success and failure. If responseFromServer
is true
, call the resolve
method to successfully complete the promise. Pass resolve
a string with the value We got the data
. If responseFromServer
is false
, use the reject
method instead and pass it the string: Data not received
.
--hints--
resolve
should be called with the expected string when the if
condition is true
.
assert(
__helpers.removeJSComments(code).match(/if\s*\(\s*responseFromServer\s*\)\s*{\s*resolve\s*\(\s*('|"|`)We got the data\1\s*\)(\s*|\s*;\s*)}/g)
);
reject
should be called with the expected string when the if
condition is false
.
assert(
__helpers.removeJSComments(code).match(/}\s*else\s*{\s*reject\s*\(\s*('|"|`)Data not received\1\s*\)(\s*|\s*;\s*)}/g)
);
--seed--
--seed-contents--
const makeServerRequest = new Promise((resolve, reject) => {
// responseFromServer represents a response from a server
let responseFromServer;
if(responseFromServer) {
// Change this line
} else {
// Change this line
}
});
--solutions--
const makeServerRequest = new Promise((resolve, reject) => {
// responseFromServer represents a response from a server
let responseFromServer;
if(responseFromServer) {
resolve("We got the data");
} else {
reject("Data not received");
}
});