Facebook Pixel FB像素代码

<script>
!function(f,b,e,v,n,t,s)
{if(f.fbq)return;n=f.fbq=function(){n.callMethod?
n.callMethod.apply(n,arguments):n.queue.push(arguments)};
if(!f._fbq)f._fbq=n;n.push=n;n.loaded=!0;n.version='2.0';
n.queue=[];t=b.createElement(e);t.async=!0;
t.src=v;s=b.getElementsByTagName(e)[0];
s.parentNode.insertBefore(t,s)}(window, document,'script',
'https://connect.facebook.net/en_US/fbevents.js');

fbq('init', '209037849672232');
fbq('track', 'Purchase',{value:'9.99',currency:'USD'});
</script>
<noscript>
<img height='1' width='1' src='https://www.facebook.com/tr?id=209037849672232&ev=PageView&noscript=1'/>
</noscript>