LWC Complex Expressions in Spring '26: What's New

If you've been writing Lightning Web Components for any length of time, you've probably written a one-line getter just to format a date, build a CSS class string, or check whether two values match. I know I have. Dozens of them. Maybe hundreds.

Spring '26 changes that. Salesforce shipped Complex Template Expressions as a beta feature, and it's the kind of update that quietly changes how you build components day to day. You can now write actual JavaScript expressions inside your HTML templates: ternary operators, math, string concatenation, logical operators, all of it. No more getter graveyard cluttering up your .js files.

I want to walk through what's actually new, what it looks like in practice, what's still off-limits, and a few opinions on when to reach for it (and when not to).

What the LWC Template Could Do Before

Up until Spring '26, LWC templates were intentionally simple.…