--- id: 5cdafbb0291309899753167f title: Create a JavaScript Promise challengeType: 1 forumTopicId: 301197 --- ## Description <section id='description'> A promise in JavaScript is exactly what it sounds like - you use it to make a promise to do something, usually asynchronously. When the task completes, you either fulfill your promise or fail to do so. <code>Promise</code> is a constructor function, so you need to use the <code>new</code> keyword to create one. It takes a function, as its argument, with two parameters - <code>resolve</code> and <code>reject</code>. These are methods used to determine the outcome of the promise. The syntax looks like this: ```js const myPromise = new Promise((resolve, reject) => { }); ``` </section> ## Instructions <section id='instructions'> Create a new promise called <code>makeServerRequest</code>. Pass in a function with <code>resolve</code> and <code>reject</code> parameters to the constructor. </section> ## Tests <section id='tests'> ```yml tests: - text: You should assign a promise to a declared variable named <code>makeServerRequest</code>. testString: assert(makeServerRequest instanceof Promise); - text: Your promise should receive a function with <code>resolve</code> and <code>reject</code> as parameters. testString: assert(code.match(/Promise\(\s*(function\s*\(\s*resolve\s*,\s*reject\s*\)\s*{|\(\s*resolve\s*,\s*reject\s*\)\s*=>\s*{)[^}]*}/g)); ``` </section> ## Challenge Seed <section id='challengeSeed'> <div id='js-seed'> ```js ``` </div> </section> ## Solution <section id='solution'> ```js const makeServerRequest = new Promise((resolve, reject) => { }); ``` </section>