JavaScript & Custom Development
Custom JavaScript for landing pages, forms, tracking scripts, and marketing automation platforms - plus webhook configuration, application hosting, and script review for existing implementations.
Marketing platforms have limits.
When native functionality stops short of a defined requirement - a complex tracking implementation, a form behavior that requires custom logic, a webhook that needs to handle edge cases the platform doesn't account for - custom development is the only path forward. Tactical Marketing writes, reviews, and deploys custom JavaScript and webhook configurations as operational components, not one-off scripts.
Our Approach
We write JavaScript that works within the constraints of the platforms it runs on - marketing automation landing pages, form handlers, tracking layers - and we review existing scripts for logic errors, performance issues, and alignment with marketing objectives before inheriting them.
Webhook work covers both inbound and outbound configurations, with validation testing that confirms real-time data sync behaves correctly under live conditions.
Discuss JavaScript & Custom Development
Connect with Phil to discuss your operational environment, what's not behaving correctly, and how Tactical Marketing approaches the repair and governance work.
Contact Us"The automated Certificate program that the Tactical MA team and I worked on earlier this year wrapped up a few weeks ago and generated over $10 million in deposits."
What We Do in JavaScript & Custom Development
Related deep dive
API Integration →Custom code and integration where native tools stop short.
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Frequently Asked Questions
Can you review scripts a previous developer or agency left behind?
Yes - script review is often where the engagement starts, because inherited JavaScript is a liability until someone who understands it has read it. We review existing scripts for logic errors, performance cost, security exposure, and whether they still align with the marketing objective they were built for. The review comes back in writing: what each script does, what's fragile, what should be fixed or retired. Marketing teams are frequently running scripts on every page that nobody can explain - that's worth resolving before it breaks something visible.
Our need is small - one form behavior, one tracking script. Is that too small an engagement?
No. Custom development work is scoped to the requirement, and plenty of requirements are genuinely small: a form that needs conditional field logic, a tracking script that needs to fire on a specific interaction, a webhook that needs one transformation applied. Small scope doesn't mean casual execution - even a twenty-line script gets tested against real user flows and documented so your team knows it exists and what it does. What we avoid is inflating small requirements into large engagements.
How do you validate that a webhook integration actually works before it goes live?
With real payloads under real conditions - not just a successful test ping. Webhook validation covers the edge cases that break production integrations: missing or malformed fields, duplicate deliveries, out-of-order events, and what happens on the receiving end when the payload doesn't match expectations. We test failure behavior deliberately - what gets retried, what gets logged, what alerts someone - because a webhook that silently drops data is worse than one that visibly fails. Sign-off happens after live-condition validation, not after the happy path works once.
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Start the conversation.
If something isn't behaving the way it should, that's where we start. Phil reads every inbound personally and responds within one business day.