BBCode Parser

Parse BBCode into AST and convert into HTML

As of 2025-09-16. See the latest version.

This script should not be not be installed directly. It is a library for other scripts to include with the meta directive // @require https://update.greasyfork.org/scripts/549682/1661583/BBCode%20Parser.js

You will need to install an extension such as Tampermonkey, Greasemonkey or Violentmonkey to install this script.

You will need to install an extension such as Tampermonkey or Violentmonkey to install this script.

You will need to install an extension such as Tampermonkey or Violentmonkey to install this script.

You will need to install an extension such as Tampermonkey or Userscripts to install this script.

You will need to install an extension such as Tampermonkey to install this script.

You will need to install a user script manager extension to install this script.

(I already have a user script manager, let me install it!)

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

(I already have a user style manager, let me install it!)

Author
PYUDNG
Version
0.1
Created
2025-09-16
Updated
2025-09-16
Size
24.9 KB
License
GPL-3.0-or-later

A BBCode parser without any built-in parsing rules, allowing users to implement their own rules.

Usage

1. First of all, create parser

const parser = new BBCodeParser();

2. Implement and register parsing rules

A rule for [url=URL]CONTENT[/url] can be registered like this:

parser.register({
    'url': {
        openTag(params, content) {
            let url = params ?? content;
            url = url.startsWith('http://') || url.startsWith('https://') ? url : 'http://' + url;
            return `<a href="${ url }" target="_blank">`;
        },
        closeTag(params, content) {
            return '</a>'
        },
    }
});

A rule for [b]CONTENT[/b] can be registered like this:

parser.register({
    'b': {
        openTag(params, content) {
            return '<b>';
        },
        closeTag(params, content) {
            return '</b>';
        },
    },
});

And yes, they can be registered with one call:
``` javascript
parser.register({
    'url': {
        openTag(params, content) {
            let url = params ?? content;
            url = url.startsWith('http://') || url.startsWith('https://') ? url : 'http://' + url;
            return `<a href="${ url }" target="_blank">`;
        },
        closeTag(params, content) {
            return '</a>'
        },
    },
    'b': {
        openTag(params, content) {
            return '<b>';
        },
        closeTag(params, content) {
            return '</b>';
        },
    },
});

3. Parse bbcode (and get html if need)

const result = parser.parse('[b]Hello[/b], [url=https://example.com/]bbcode[/url]');
// You can access html or ast / nodes in result object, like
console.log(result.html);

Types

Please refer to JSDoc in source code.