jquery-4

Migrate jQuery 3.x to 4.0.0 safely in WordPress and legacy web projects. Covers all breaking changes: removed APIs ($.isArray, $.trim, $.parseJSON, $.type), focus event order changes, slim build differences, ES modules migration, and Trusted Types support. Use when: upgrading jQuery to 4.0, fixing "$.isArray is not a function" errors, WordPress jQuery migration, updating legacy JavaScript, or troubleshooting focus/blur event order issues.

Install with Tessl CLI

npx tessl i github:jezweb/claude-skills --skill jquery-4

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Review — 88%

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npx tessl skill review --optimize ./path/to/skill

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Validation — 13 / 16 Passed

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SKILL.md

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