Does this skill help with WordPress jQuery updates?

Yes, it includes specific patterns for WordPress developers to dequeue old versions and safely enqueue jQuery 4.0 and the migrate plugin for testing.

Why am I getting '$.isArray is not a function' after upgrading?

This method was removed in version 4.0. This skill helps you replace it with the native Array.isArray() method used in modern JavaScript.

Can I use jQuery 4.0 with ES modules?

Yes, jQuery 4.0 officially supports ES module imports, and this skill provides the necessary configuration patterns for modern build tools and package.json settings.

What is the difference between the full and slim builds of jQuery 4?

The slim build removes AJAX, effects, and Deferreds to save space. This skill helps you determine if your project can safely use the smaller slim version or requires the full build.

What are the biggest breaking changes in jQuery 4.0?

jQuery 4.0 removes many long-deprecated utility functions like $.isArray, $.trim, and $.parseJSON, and changes focus event ordering to match W3C standards.

jQuery 4 Migration Assistant

Name: jQuery 4 Migration Assistant
Author: brendadeeznuts1111

bybrendadeeznuts1111

0•

Developer Tools

Guides the safe migration of legacy web projects and WordPress themes from jQuery 3.x to jQuery 4.0.0.

The jQuery 4 Migration Assistant is a specialized Claude Code skill designed to streamline the upgrade path to jQuery 4.0.0. It identifies and fixes breaking changes such as removed utility functions like $.isArray and $.trim, updates event ordering to W3C standards, and manages transitions to ES modules or native JavaScript replacements. Ideal for WordPress developers and maintainers of legacy web applications, this skill ensures application stability by providing specific migration patterns, polyfills, and troubleshooting for common 'is not a function' errors that occur during major version upgrades.

Key Features

01Detailed comparison and configuration advice for jQuery Slim vs. Full builds

02Detection and replacement of removed utility functions with native JavaScript equivalents

03Support for ES module imports and Trusted Types compliance for modern CSP

040 GitHub stars

05WordPress-specific migration path configuration and plugin conflict auditing

06Guidance on W3C standard focus/blur event ordering adjustments

Use Cases

01Refactoring AJAX-heavy code to comply with new jQuery 4.0 script execution rules

02Upgrading legacy enterprise web applications to jQuery 4.0 for long-term support

03Resolving '$.isArray is not a function' errors in WordPress themes after core updates

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add brendadeeznuts1111/tier-1380-omega jquery-4

For use in Claude.ai and ChatGPT

Download Skill