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Move default highlight.js highlighting into a web worker #3591

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Move default highlight.js highlighting into a web worker #3591

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47bdcfe
Move default highlight.js highlighting into a web worker
Feb 27, 2018
0d5afc2
fixup! Move default highlight.js highlighting into a web worker
Feb 27, 2018
65605cd
fixup! Move default highlight.js highlighting into a web worker
Feb 27, 2018
7c2cc02
fixup! Move default highlight.js highlighting into a web worker
Feb 27, 2018
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10 changes: 10 additions & 0 deletions public/js/highlight-worker.js
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Original file line number Diff line number Diff line change
@@ -0,0 +1,10 @@
// A very simple web worker for highlight.js
// See: https://highlightjs.org/usage/
'use strict';

importScripts('/vendor/plugins/highlight/highlight.pack.js');

onmessage = function(event) {
var result = self.hljs.highlightAuto(event.data.text);
postMessage({index: event.data.index, html: result.value});
};
9 changes: 8 additions & 1 deletion public/js/index.js
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Original file line number Diff line number Diff line change
Expand Up @@ -1430,7 +1430,14 @@ $(document).ready(function () {

// Highlight JS
if (typeof hljs != 'undefined') {
hljs.initHighlightingOnLoad();
var codeElements = $('pre code');
var worker = new Worker('/js/highlight-worker.js');
worker.onmessage = function(event) {
$(codeElements[event.data.index]).html(event.data.html);
}
$(codeElements).each(function (index, element) {
worker.postMessage({index: index, text: $(element).text()});
});
}

// Dropzone
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