ProgBlog/public/assets/js/admin.js

(function() {
	'use strict';

	autosize(document.getElementsByTagName('textarea'));

	var md = markdownit({
		html: true,
		xhtmlOut: true,
		highlight: function (str, lang) {
			hljs.configure({
				tabReplace: '    '
			});
			if (lang && hljs.getLanguage(lang)) {
				try {
					return hljs.highlight(lang, str).value;
				} catch (__) {}
			}

			return ''; // use external default escaping
		}
	});

	function liveUpdate(e) {

	}

	document.getElementById('post_content').addEventListener('input', function(e) {
		document.getElementById('preview').innerHTML = md.render(this.value);
	});

	document.getElementById('post_content').addEventListener('keydown', function (e) {
		// Allow use of tab key for indentation
		if (e.keycode == 9 || e.which == 9) {
			e.preventDefault();
			//e.stopPropagation();
			var s = this.selectionStart;
			this.value = this.value.substring(0,this.selectionStart) + "\t" + this.value.substring(this.selectionEnd);
			this.selectionEnd = s+1;
		}

		document.getElementById('preview').innerHTML = md.render(this.value);
	});
	document.getElementById('preview').innerHTML = md.render(document.getElementById('post_content').value);

})();