I have the following code:

var requestUri = webAbsUrl + "/_api/web/Lists/getByTitle('Staff Directory')/Items?$\
        filter=Title eq '" + currentUserEmail + "'&$\

It works until it encountered an employee with an apostrophe in the last name. I tried encodeURI() and encodeURIComponent() but neither worked. I tried searching online and can't seem to find a quick solution.

Example Email: John.O'Doe@domain.com

3 Answers 3


Use below:

var str = fixedEncodeURIComponent(currentUserEmail);

var requestUri = webAbsUrl + "/_api/web/Lists/getByTitle('Staff Directory')/Items?$\
    filter=Title eq '" + str + "'&$\

function fixedEncodeURIComponent(src) {
return encodeURIComponent(src).replace(/[']/g, function (c) {
        return '%' + c.charCodeAt(0).toString(16) + '%' + c.charCodeAt(0).toString(16);

Basically, it duplicates the ' twice, and enconde each ' => %27. As a result, the url will show %27%27 per each '

  • 1
    does it mean I have to replace a single apostrophe with double apostrophe? I'm confused about how charCodeAt(0).toString(16) = 27? May 2, 2018 at 19:15
  • 1
    I found the answer about .toString(16) here: May 2, 2018 at 19:25
  • 1
    Thanks mate. %27%27 fixed it
    – Anand
    Mar 10, 2020 at 15:32
  • The slashes are unnecessary, though. /_api/web/Lists/getByTitle('Staff Directory')/Items?$filter=Title eq 'John.O''Doe@domain.com' on a browser bar URL will work, so just doing the apostrophe replace with %27%27 within the email address works.
    – vapcguy
    Nov 3, 2021 at 21:07

Deepmala's answer will work, but it seems overly complex and hides both the approach and the actual solution. What you're trying to do is replace a single apostrophe with two, but they both have to be URI-encoded.

A simpler and easier-to-understand solution:

var str = fixedEncodeURIComponent(currentUserEmail);

var requestUri = _spPageContextInfo.webAbsoluteUrl + "/_api/web/Lists/getByTitle('Staff Directory')/Items?$filter=Title eq '" + str + "'";

function fixedEncodeURIComponent(src) {
    return encodeURIComponent(src).replace(/[']/g, '%27%27');

Based on @Deepmala, @Dave Read, and this sharepoint article over here.

Here is a method that ensures your query string is going to follow the Sharepoint REST url format, encoding any apostrophe, or any other reserved character:

function encodeRestUrl(query: string) {
    return encodeURIComponent(query.replace(/[%]/g, '%25'))
      .replace(/[']/g, '%27%27')
      .replace(/[&]/g, '%26')
      .replace(/[#]/g, '%23')
      .replace(/[?]/g, '%3F')
      .replace(/[/]/g, '%2F')
      .replace(/[+]/g, '%2B');
  • A little more context on how to use this is needed, IMHO...
    – vapcguy
    Nov 3, 2021 at 21:17
  • This method ensures your query doenst have characters that make the rest call to fail, like apostrophes, %, and other reserved characters
    – Alberto S.
    Nov 8, 2021 at 9:05
  • What I mean is context on where this goes, how it is called... i.e. What do I do with this thing?!
    – vapcguy
    Nov 8, 2021 at 17:23
  • 1
    Based on the question that is above, this is pretty self explanatory. This is a JS method that you can call passing the query mentioned in the question, as the input param, so your queries can contain apostrophes or other special characters
    – Alberto S.
    Nov 9, 2021 at 21:35
  • 1
    Ok, I had just never seen a const used this way. Usually a const doesn't change. I would have made it a function, but tow-MAY-tow, tow-MAH-tow, I suppose. Thanks for the explanation, even if a bit snarky.
    – vapcguy
    Nov 10, 2021 at 18:05

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