regex - delete a space after a period javascript -


i trying write funciton in javascript delete spaces , punctuation in sentence, , check if it's palindrome. i've gotten of work, won't delete space after period in canal. how can this?

function palindrome(str) {       str = str.tolowercase();      str = str.replace(/\s+/g, '');      str = str.replace(/,/g , "");      str = str.split('.').join(' ');      document.write(str);      if(str.split("").reverse().join("") === str) {         return true;     }     else {         return false;      } }  palindrome("a man, plan, canal. panama");

i use 1 replace spaces, commas, , periods

function palindrome(str) {         str = str.tolowercase();       str = str.replace(/[\s,\.]+/g, '');      document.write(str);        if(str.split("").reverse().join("") === str) {          return true;      }      else {          return false;       }  }    console.log(palindrome("a man, plan, canal. panama"));


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