Custom Embedded JavaScript Functions: Difference between revisions

When you have navigated to the object list view, you can click on the “New” button which will display the new record form. What is important here is that you give the Function Expression a unique name that has no spaces or special characters. Don’t worry about enforcing this rule yourself, we have built a salesforce validation rule to make sure that the name of the Value Formatter is compliant with 3B Docs.  

Just like custom value formatters, when you create a Function Expression, you are basically creating a JavaScript function. This JavaScript function has access to the global context and thus to the user’s navigator object, the application variables & collections and much more.

The difference between custom value formatters and Function Expressions lies in the fact that custom value formatters can only be applied to a specific [[Merge Fields and Tags|merge tag]], whereas [[Custom Embedded JavaScript Functions|Function Expressions]] form their own independent merge tags.

You must always return a string value – this return value will be your “transformation” of the merge tag.  

This example is useful for getting a dynamically generated timestamp of the current date relative to when the document is opened in dd/mm/yyyy format (don’t worry, you can still apply custom value formatters and transform the date to a US date!)<syntaxhighlight lang="javascript" line="1">