aceEnable autocompletion in Ace editor.

<script src="https://pagecdn.io/lib/ace/1.4.12/ace.min.js"></script>
<script src="https://pagecdn.io/lib/ace/1.4.12/ext-language_tools.min.js"></script>

<textarea id="editor"></textarea>

<script>
  var editor = ace.edit('editor', { enableBasicAutocompletion: true, enableSnippets: true, enableLiveAutocompletion: true });
  editor.session.setMode('ace/mode/javascript');
</script>ctrl + cyoutubegithub

`ace.min.js` load Ace lib from CDN	`ext-language_tools.min.js` load language tools for autocompletion
`var editor` ace editor object	`<textarea id="editor"` HTML element to replace with Ace editor
`'editor'` ID of HTML element to replace with code editor	`enableBasicAutocompletion` enables autocompletion
`enableSnippets` enables custom snippets	`enableLiveAutocompletion` enables live code suggestions

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