Freecodecamp: palindrome("0_0 (: /-\ :) 0-0") should return true. It's a bug.

[ShenZQ]

Challenge Check for Palindromes has an issue.
User Agent is: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Ubuntu Chromium/48.0.2564.116 Chrome/48.0.2564.116 Safari/537.36.
Please describe how to reproduce this issue, and include links to screenshots if possible.

My code:

function palindrome(str) {
  // Good luck!
  var tmpStr = str.replace(/[\s,.!;]/g,"").toLowerCase().replace("-","_");
  var reStr = tmpStr.split("").reverse().join("");
  if (tmpStr === reStr){
    return true;
  }else{
    return false;
  }
}



palindrome("never-odd o_r even");

"0_0 (: /-\ :) 0-0" contains a escape symbol, so it  actually is "0_0 (: /- :) 0-0", it isn't a palindrome string.

[raisedadead]

"0_0 (: /-\ :) 0-0" contains a escape symbol, so it actually is "0_0 (: /- :) 0-0", it isn't a palindrome string.

Agreed. It isn't until you remove all the symbols.

Refer instructions:

Note
You'll need to remove all non-alphanumeric characters (punctuation, spaces and symbols) and turn everything lower case in order to check for palindromes.

Bonus hint: This one is a trick question :wink:

If you are still stuck please ask for help in the Help Chat

[ShenZQ]

For passing this challenge, I must modify my code like this:

str.replace(/\W+|_/g,"")

But this is not the real intention. And when I am more in-depth, I find that I must process that pairs of symbol: "(" and ")", "<" and ">" , "{" and "}", "[" and "]". Oh, I would go nuts!

[raisedadead]

Lol yup! @ShenZQ I admit, I had to take two coffee's to solve this last test case! :sweat_smile:

[ShenZQ]

@raisedadead I wait for your code. Lol!

[kotrotko]

ahhahaha got it) cool