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Use client-side JavaScript in content block

Recently, I attempted to reference a content block from a cloud page that contained client-side JavaScript, and to my surprise, Salesforce Marketing Cloud removed it entirely. It looks like certain hook that triggers when you save your content block doesn;t like client side scripts and are completely removed like comments are when a executable program is compiled.

It took me some time to notice this behaviour. One day when I did not have to smash other marketing automation problem I did some investigation, and lo and behold, it’s actually a common “feature”. With that in mind, I’ve found a simple workaround on YouTube. Let’s take a look at the content block (snippet of code)

%%=Concat('<','scr','ipt>')=%%
  //your client side javascript
  var 1plus1 = ()=>1+1
%%=Concat('</','scr','ipt>')=%%  

On cloud page we simply reffer to this block by

%%=treatascontent(ContentBlockByKey('client_side_js'))=%%

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MarTech consultant

Marcel Szimonisz

Marcel Szimonisz

I specialize in solving problems, automating processes, and driving innovation through major marketing automation platforms.

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