Dictionary term
Expression (n8n)
Automation PlatformsIntermediate
In n8n, an expression is a snippet of JavaScript wrapped in {{ }} that dynamically computes a field value from incoming data.
In plain English
An expression is a small formula inside an n8n field that fills it in from earlier data, like a spreadsheet formula.
Analogy
Like a spreadsheet formula that fills a cell based on other cells.
Why it matters
Expressions let you transform and reference data between nodes without adding separate code nodes.
In practice
{{$json.email.toLowerCase()}} to normalize an email field.
Related terms
Sources
Browse all terms →Last verified