html load youtube video onclick code example
Example: play iframe video onclick a link javascript
<iframe id="video1" width="450" height="280" src="http://www.youtube.com/embed/TJ2X4dFhAC0?enablejsapi" frameborder="0" allowtransparency="true" allowfullscreen></iframe>
<a href="#" id="playvideo">Play button</a>
<script>
$("#playvideo").click(function(){
$("#video1")[0].src += "?autoplay=1";
});
</script>