learning to use JavaScript’s replaceAll() method

JavaScript’s replaceAll() method is totally different from JS regex’s replace() method. I encounter my aha moment in working with strings and wanting to replace the current string of something with a new string of something else, which is when I discovered String.prototype.replaceAll() in MDN Web Docs.

According to MDN Web Docs: The replaceAll() method returns a new string with all matches of a pattern replaced by a replacement. The pattern can be a string or a RegExp, and the replacement can be a string or a function to be called for each match. The original string is left unchanged

SYNTAX structure in replaceAll()

• replaceAll(regexp, newSubstr)
• replaceAll(regexp, replacerFunction)
• replaceAll(substr, newSubstr)
• replaceAll(substr, replacerFunction)

Furthermore, I implement replaceAll() method on this Leetcode problem.

var defangIPaddr = function(address) {
//solution with replaceAll()
      return address.replaceAll('.', "[.]");
//solution using regex in replace()
      return address.replace(/[.]/g,"[.]");
          //or try this (below)
      return address.replace(/\./g,"[.]");

//solution using two methods in split() and join() 
     return address.split('.').join('[.]')
}

Please clap if you enjoy this read. Thank you.

Happy coding.

References
• “String.prototype.replaceAll()”. MDN Web Docs.