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Affirm Merchant Help

Embed Affirm

Embed Affirm's JS runtime code

<script>
  _affirm_config = {
    public_api_key:  "XXXXXXXXXXXXXXX",
    script:          "https://cdn1-sandbox.affirm.com/js/v2/affirm.js"
  };
  (function(l,g,m,e,a,f,b){var d,c=l[m]||{},h=document.createElement(f),n=document.getElementsByTagName(f)[0],k=function(a,b,c){return function(){a[b]._.push([c,arguments])}};c[e]=k(c,e,"set");d=c[e];c[a]={};c[a]._=[];d._=[];c[a][b]=k(c,a,b);a=0;for(b="set add save post open empty reset on off trigger ready setProduct".split(" ");a<b.length;a++)d[b[a]]=k(c,e,b[a]);a=0;for(b=["get","token","url","items"];a<b.length;a++)d[b[a]]=function(){};h.async=!0;h.src=g[f];n.parentNode.insertBefore(h,n);delete g[f];d(g);l[m]=c})(window,_affirm_config,"affirm","checkout","ui","script","ready");
 // Use your live public API Key and https://cdn1.affirm.com/js/v2/affirm.js script to point to Affirm production environment.
</script>

Note: replace the 'public_api_key' value with your own public API key. The API key must match the Affirm-environment you're referencing ('sandbox' or 'live').

Once the Affirm JS is initialized, the affirm.checkout methods are made available:

  • affirm.checkout({ }) - Stores the checkout object and is used for the checkout request payload.
  • affirm.checkout.open() - Sends the checkout object via POST request.
Define runtime parameters

The Affirm environment that's used is determined by the Affirm script URL that's defined in the _affirm_config.script:

var _affirm_config = {
    public_api_key:  "XXXXXXXXXXXXXXX",
    script:          "https://cdn1-sandbox.affirm.com/js/v2/affirm.js"
  };