Imprv: Show line numbers of highlight.js

use https://github.com/wcoder/highlightjs-line-numbers.js/

CDN

<script src="https://cdn.jsdelivr.net/combine/
npm/highlightjs-line-numbers.js@2.3.0/dist/highlightjs-line-numbers.min.js,
...
" defer></script>

Markdown Syntax

<div class="hljs-ln">
```javascript
function hoge() {
}
```
</div>

Event Trigger

• after default_rules.fence
  • https://github.com/markdown-it/markdown-it/blob/d57c83a4f1f8747c5781632291d195aa2e2154de/lib/renderer.js#L39

Process with jQuery

$('pre.hljs code').each(function(i, block) {
  hljs.lineNumbersBlock(block);
});

[yuki-takei]

@yaodingyd Thank you for your submittion! Your code works very well! We’ll release this feature on v3.3.3.

[IssueHuntBot]

@yuki-takei has rewarded $70.00 to @yaodingyd. See it on IssueHunt

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