Add Table of Content in Your Obsidian Notes Anywhere

Here's the templater script for adding TOC. Or, You can also download the attached markdown file. 

>[!SUMMARY] Table of Contents

<%*

    let headers = await tp.file.content

        .split('\n') // split file into lines

        .filter(t => t.match(/^[#]+\s+/gi)) // only get headers

        .map(h => {

            let header_level = h.split(' ')[0].match(/#/g).length;

             // get header text without special characters like '[' and ']'

            let header_text = h.substring(h.indexOf(' ') + 1).replace(/[\[\]]+/g, '');

            let header_link = `[[${tp.file.title}#${header_text}|${header_text}]]`

            // prepend block-quote (>), indentation and bullet-point (-)

            return `>${'    '.repeat(header_level - 1) + '- ' + header_link}`;

        })

        .join('\n')

%><% headers %>

SOURCE