How to replace all dots in a string using JavaScri

Question

I want to replace all the occurrences of a dot(.) in a JavaScript string

For example, I have:

var mystring = 'okay.this.is.a.string';

I want to get: okay this is a string.

So far I tried:

mystring.replace(/./g,' ')

but this ends up with all the string replaced to spaces.

Answer 1

For this simple scenario, i would also recommend to use the methods that comes build-in in javascript.

You could try this :

"okay.this.is.a.string".split(".").join("")

Greetings

Answer 2

@scripto's made a bit more concise and without prototype:

function strReplaceAll(s, stringToFind, stringToReplace) {
    if (stringToFind === stringToReplace) return s;
    for (let index = s.indexOf(stringToFind); index != -1; index = s.indexOf(stringToFind))
        s = s.replace(stringToFind, stringToReplace);
    return s;
}

Here's how it stacks up: http://jsperf.com/replace-vs-split-join-vs-replaceall/68

Answer 3

You need to escape the . because it has the meaning of "an arbitrary character" in a regular expression.

mystring = mystring.replace(/\./g,' ')

Answer 4

Here's another implementation of replaceAll. Hope it helps someone.

    String.prototype.replaceAll = function (stringToFind, stringToReplace) {
        if (stringToFind === stringToReplace) return this;
        var temp = this;
        var index = temp.indexOf(stringToFind);
        while (index != -1) {
            temp = temp.replace(stringToFind, stringToReplace);
            index = temp.indexOf(stringToFind);
        }
        return temp;
    };

Then you can use it:

var myText = "My Name is George";
var newText = myText.replaceAll("George", "Michael");

Answer 5

This is more concise/readable and should perform better than the one posted by Fagner Brack (toLowerCase not performed in loop):

String.prototype.replaceAll = function(search, replace, ignoreCase) {
  if (ignoreCase) {
    var result = [];
    var _string = this.toLowerCase();
    var _search = search.toLowerCase();
    var start = 0, match, length = _search.length;
    while ((match = _string.indexOf(_search, start)) >= 0) {
      result.push(this.slice(start, match));
      start = match + length;
    }
    result.push(this.slice(start));
  } else {
    result = this.split(search);
  }
  return result.join(replace);
}

Usage:

alert('Bananas And Bran'.replaceAll('An', '(an)'));

Answer 6

var mystring = 'okay.this.is.a.string';
var myNewString = escapeHtml(mystring);

function escapeHtml(text) {
if('' !== text) {
    return text.replace(/&/g, "&")
               .replace(/&lt;/g, "<")
               .replace(/&gt;/g, ">")
               .replace(/\./g,' ')
               .replace(/&quot;/g, '"')
               .replace(/&#39/g, "'");
}