Create Strings using Template Literals: no such property

JavaScript
1

Tell us what’s happening:
I get the error Cannot read property ‘every’ of undefined, but there is no such property ‘every’. Along with that I cannot pass the tests for:

resultDisplayArray is an array containing result failure messages.
resultDisplayArray is the desired output.

Could someone help me debug this code? I have a feeling I’m not understanding the question requirements.

Your code so far


const result = {
  success: ["max-length", "no-amd", "prefer-arrow-functions"],
  failure: ["no-var", "var-on-top", "linebreak"],
  skipped: ["id-blacklist", "no-dup-keys"]
};
function makeList(arr) {
  "use strict";

  // change code below this line
  const resultDisplayArray = [];
  resultDisplayArray.push(
    [`<li class="text-warning">${arr[0]}</li>`],
   [`<li class="text-warning">${arr[1]}</li>`], 
   [`<li class="text-warning">${arr[2]}</li>`]
  );
  // change code above this line

  return console.log(resultDisplayArray);
}
/**
 * makeList(result.failure) should return:
 * [ `<li class="text-warning">no-var</li>`,
 *   `<li class="text-warning">var-on-top</li>`, 
 *   `<li class="text-warning">linebreak</li>` ]
 **/
const resultDisplayArray = makeList(result.failure);

Your browser information:

User Agent is: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/75.0.3770.80 Safari/537.36.

Link to the challenge:
https://learn.freecodecamp.org/javascript-algorithms-and-data-structures/es6/create-strings-using-template-literals

2

The error message is coming from the tests. You are returning the result of console.log(resultDisplayArray) (which is undefined) rather than resultDisplayArray itself.

1 Like
3

Ah I put the console.log to debug the code (but i bugged it even further lol). I removed it and I still can’t pass the test for:

resultDisplayArray is the desired output.

Any advice is appreciated, cheers.

This is the output when I edit the code to- console.log(makeList(result.failure));


<li class="text-warning">no-var</li>,<li class="text-warning">var-on-top</li>,<li class="text-warning">linebreak</li>

So it seems like my answer is right, but it isnt? I know there are other ways to solve this question, but I’d like to know why my answer isn’t right.

4

You are pushing arrays into the array, you should just push the template strings. You can loop the array or just use three push calls if you want.

1 Like
5

That’s solved it, thanks a ton!