This is a simple Twitter Bootstrap 3 template. You can fork it to get a ready to use Bootstrap 3 fiddle.
jQuery 2.2.4, HTML, CSS, JavaScript
jQuery (edge), HTML, CSS, JavaScript
No-Library (pure JS), HTML, CSS, JavaScript
Here you get a javascript example .
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Mootools 1.3.2, HTML, CSS, JavaScript
when you scroll up then add active class for your every section
jQuery 1.7, HTML, CSS, JavaScript
jQuery 2.2.1, HTML, CSS, JavaScript