fix(seed-update): browser console, fCC Console, functionality of both (…

…#15660)

seed/challenges/02-javascript-algorithms-and-data-structures/debugging.json

@@ -67,6 +67,46 @@
       "challengeType": 1,
       "translations": {}
     },
+    {
+      "id": "587d7b83367417b2b2512b37",
+      "title": "Understanding the Differences between the freeCodeCamp and Browser Console",
+      "description": [
+        "You may have noticed that some freeCodeCamp JavaScript challenges include their own console.  This console behaves a little differently than the browser console you used in the last challenge.",
+        "The following challenge is meant to highlight some of the differences between the freeCodeCamp console and the browser console.",
+        "First, the browser console.  When you load and run an ordinary JavaScript file in your browser the <code>console.log()</code> statements will print exactly what you tell them to print to the browser console the exact number of times you requested. In your in-browser text editor the process is slightly different and can be confusing at first.",
+        "Values passed to <code>console.log()</code> in the text editor block run each set of tests as well as one more time for any function calls that you have in you code.",
+        "This lends itself to some interesting behavior and might trip you up in the beginning, because a logged value that you expect to see only once may print out many more times depending on the number of tests and the values being passed to those tests.",
+        "If you would like to see only your single output and not have to worry about running through the test cycles, you can use <code>console.clear()</code>.",
+        "<hr>",
+        "Use <code>console.log()</code> to print the variables in the code where indicated.",
+        ""
+      ],
+      "challengeSeed": [
+        "// Open your browser console",
+        "let outputTwo = \"This will print to the browser console 2 times\";",
+        "// Use console.log() to print the outputTwo variable",
+        "",
+        "",
+        "let outputOne = \"Try to get this to log only once to the browser console\";",
+        "// Use console.clear() in the next line to print the outputOne only once",
+        "",
+        "",
+        "// Use console.log() to print the outputOne variable",
+        "",
+        ""
+      ],
+      "tests": [
+        "assert(code.match(/console\\.log\\(outputTwo\\)/g), 'message: Use <code>console.log()</code> to print the <code>outputTwice</code> variable.  In your Browser Console this should print out the value of the variable two times.');",
+        "assert(code.match(/console\\.log\\(outputOne\\)/g), 'message: Use <code>console.log()</code> to print the <code>outputOne</code> variable.');",
+        "assert(code.match(/console\\.clear\\(\\)/g), 'message: Use <code>console.clear()</code> to modify your output so that <code>outputOne</code> variable only outputs once.');"
+      ],
+      "solutions": [],
+      "hints": [],
+      "type": "waypoint",
+      "releasedOn": "Feb 17, 2017",
+      "challengeType": 1,
+      "translations": {}
+    },
     {
       "id": "587d7b84367417b2b2512b34",
       "title": "Use typeof to Check the Type of a Variable",