feat(curriculum): Add fetch challenge to the current curriculum. (#36033)

* Add fetch challenge for the current curriculum

curriculum/challenges/_meta/json-apis-and-ajax/meta.json

@@ -24,6 +24,10 @@
       "587d7fae367417b2b2512be3",
       "Get JSON with the JavaScript XMLHttpRequest Method"
     ],
+    [
+      "5ccfad82bb2dc6c965a848e5",
+      "Get JSON with the JavaScript fetch method"
+    ],
     [
       "587d7fae367417b2b2512be4",
       "Access the JSON Data from an API"

curriculum/challenges/english/04-data-visualization/json-apis-and-ajax/get-json-with-the-javascript-fetch-method.md

@@ -0,0 +1,167 @@
+---
+id: 5ccfad82bb2dc6c965a848e5
+title: Get JSON with the JavaScript fetch method
+challengeType: 6
+---
+
+## Description
+<section id='description'>
+Another way to request external data is to use the JavaScript <code>fetch()</code>  method. It is equivalent to XMLHttpRequest, but the syntax is considered easier to understand.
+Here is the code for making a GET request to <code>/json/cats.json</code>
+
+```js
+
+fetch('/json/cats.json')
+	.then(response => response.json())
+	.then(data => {
+		document.getElementById('message').innerHTML = JSON.stringify(data);
+	})
+
+```
+
+Take a look at each piece of this code. 
+
+The first line is the one that makes the request. So, <code>fetch(URL)</code> makes a GET request to the URL specified. The method returns a Promise.
+
+After a Promise is returned, if the request was successful, the <code>then</code> method is executed, which takes the response and converts it to JSON format.
+
+The <code>then</code> method also returns a Promise, which is handled by the next <code>then</code> method. The argument in the second <code>then</code> is the JSON object you are looking for! 
+
+Now, it selects the element that will receive the data by using <code>document.getElementById()</code>. Then it modifies the HTML code of the element by inserting a string created from the JSON object returned from the request.
+</section>
+
+## Instructions
+<section id='instructions'>
+Update the code to create and send a "GET" request to the freeCodeCamp Cat Photo API. But this time, using the <code>fetch</code> method instead of <code>XMLHttpRequest</code>.
+</section>
+
+## Tests
+<section id='tests'>
+
+```yml
+tests:
+  - text: Your code should make a GET request with <code>fetch</code>.
+    testString: assert(code.match(/fetch\s*\(\s*('|")\/json\/cats\.json\1\s*\)/g));
+  - text: Your code should use <code>then</code> to convert the response to JSON.
+    testString: assert(code.match(/\.then\s*\(\s*(response|\(\s*response\s*\))\s*=>\s*response\s*\.json\s*\(\s*\)\s*\)/g))
+  - text: Your code should use <code>then</code> to handle the data converted to JSON by the other <code>then</code>.
+    testString: assert(code.match(/\.then\s*\(\s*(data|\(\s*data\s*\))\s*=>\s*{[^}]*}\s*\)/g))
+  - text: Your code should get the element with id <code>message</code> and change its inner HTML to the string of JSON data.
+    testString: assert(code.match(/document\s*\.getElementById\s*\(\s*('|")message\1\s*\)\s*\.innerHTML\s*=\s*JSON\s*\.\s*stringify\s*\(\s*data\s*\)/g));
+
+```
+
+</section>
+
+## Challenge Seed
+<section id='challengeSeed'>
+
+<div id='html-seed'>
+
+```html
+<script>
+  document.addEventListener('DOMContentLoaded',function(){
+    document.getElementById('getMessage').onclick= () => {
+      // Add your code below this line
+
+
+      // Add your code above this line
+    };
+  });
+</script>
+<style>
+  body {
+    text-align: center;
+    font-family: "Helvetica", sans-serif;
+  }
+  h1 {
+    font-size: 2em;
+    font-weight: bold;
+  }
+  .box {
+    border-radius: 5px;
+    background-color: #eee;
+    padding: 20px 5px;
+  }
+  button {
+    color: white;
+    background-color: #4791d0;
+    border-radius: 5px;
+    border: 1px solid #4791d0;
+    padding: 5px 10px 8px 10px;
+  }
+  button:hover {
+    background-color: #0F5897;
+    border: 1px solid #0F5897;
+  }
+</style>
+<h1>Cat Photo Finder</h1>
+<p id="message">
+  The message will go here
+</p>
+<p>
+  <button id="getMessage">
+    Get Message
+  </button>
+</p>
+```
+
+</div>
+
+
+
+</section>
+
+## Solution
+<section id='solution'>
+
+```html
+<script>
+  document.addEventListener('DOMContentLoaded',function(){
+    document.getElementById('getMessage').onclick= () => {
+      fetch('/json/cats.json')
+        .then(response => response.json())
+        .then(data => {
+          document.getElementById('message').innerHTML=JSON.stringify(data);
+        })
+    };
+  });
+</script>
+<style>
+  body {
+    text-align: center;
+    font-family: "Helvetica", sans-serif;
+  }
+  h1 {
+    font-size: 2em;
+    font-weight: bold;
+  }
+  .box {
+    border-radius: 5px;
+    background-color: #eee;
+    padding: 20px 5px;
+  }
+  button {
+    color: white;
+    background-color: #4791d0;
+    border-radius: 5px;
+    border: 1px solid #4791d0;
+    padding: 5px 10px 8px 10px;
+  }
+  button:hover {
+    background-color: #0F5897;
+    border: 1px solid #0F5897;
+  }
+</style>
+<h1>Cat Photo Finder</h1>
+<p id="message">
+  The message will go here
+</p>
+<p>
+  <button id="getMessage">
+    Get Message
+  </button>
+</p>
+```
+
+</section>