How to replace all \n\t\n\ of a string in Javascript

Question

I am using cheerio to do some simple scraping.

I want to scrape content from a website. I want to scrape it in HTML format, so I use .html() in cheerio.

const content = item.find(`div.message`).html()

And the result is a HTML source

\n\t\t\t\n\t\t\tmua về độ lại xinhan khóa thông minh đèn thấy ok mà <img src=\"/images/smilies/Off/boss.gif\" border=\"0\" alt title=\"Boss\" class=\"inlineimg\">\n\t\t

I want to remove all the \n\t\n\n\t. The regex I use is

(\\t\\n|\\n|\\t)

I work perfectly on regex101 website. It matched all the\n\t\n in the string. But when I use the replace method in Javascript, it does not work.

const content = item.find(`div.message`).html().replace(/(\\t\\n|\\n|\\t)/, "")

The result still the same string with \n\t\n\n\t.

What do I need to change in the code?

Updated more code

I create a new file to test

const string =
  '\n\t\t\t<!-- BEGIN TEMPLATE: ad_showthread_firstpost_start -->\n\n<!-- END TEMPLATE: ad_showthread_firstpost_start -->\n\t\t\ttính tết này súc em winner x , máy thím cho em ý kiến với <img src="/images/smilies/Off/pudency.gif" border="0" alt title="Pudency" class="inlineimg">\n\t\t';

console.log(string.replace(/(\\t\\n|\\n|\\t)/, ""));

The result will be the same

Why not keep the regex simple: `content.replace(/[\\t\\n]/g, '')`. Also, `"/(\\t\\n|\\n|\\t)/"` this is a string. Remove quotes to make it a regex object — Rajesh, Sep 13 '19 at 07:48
@Rajesh Yes, but it still got the same result. It don't remove the \n\t\n\n... — Nguyen Hoang, Sep 13 '19 at 08:00

Apolo · Answer 1 · 2019-09-13T09:45:10.143

1

keep it simple:

.replace(/[\\n\\t]/g, '')

edited Sep 13 '19 at 09:45

answered Sep 13 '19 at 07:51

Apolo

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That will replace new lines and tabs, not backslashes followed by n and t – Quentin Sep 13 '19 at 07:53
just keep the double backslash then. edited – Apolo Sep 13 '19 at 09:45

How to replace all \n\t\n\ of a string in Javascript

1 Answers1