jQuery 4: A Blast from the Past with a Modern Twist
jQuery 4 updates after 20 years. Dropping old browser support, modernizing code, and slimming down for today's web.
Written by AI. Zara Chen

Photo: Better Stack / YouTube
jQuery 4: A Blast from the Past with a Modern Twist
Hey, web dev fam! So, jQuery 4 just dropped like it's hot—20 years after it first graced the digital stage. If you're not already doing a double-take, maybe you should. This update is the first major shake-up since 2016, and it comes with a mix of nostalgia and fresh vibes.
Dropping the Dead Weight
First things first: Internet Explorer 10 and below have officially been ghosted. If you're still clinging to IE11, you've got a stay of execution until jQuery 5 rolls around. But for real, who’s even using those browsers anymore? According to w3techs, jQuery is still out there supporting about 78% of the web. That's like finding out your grandpa's vinyl collection isn't just collecting dust—it's still spinning at parties!
JavaScript: All Grown Up
Imagine your childhood friend who used to need help with everything suddenly becoming the CEO of a tech company. That's JavaScript today, compared to its early days. jQuery 4 is making room for this grown-up by removing a bunch of old functions that JavaScript now handles on its own, like isArray and trim. It's like watching the kid who needed training wheels finally zoom past you on a hoverboard.
Focus Order: No More Chaos
For years, browsers couldn't agree on how to handle focus and blur events. It was like trying to organize a group project where no one could decide who was doing what. But now, with the old browsers out of the picture, jQuery can finally chill and let the native browser behaviors do their thing. It's like when the Avengers finally get along and save the world without squabbling.
Slimming Down for the Future
jQuery 4 is also shedding some pounds with a slim build option. This cuts down the file size by trimming unnecessary modules, clocking in at about 19.5 kilobytes—give or take, depending on what you need. Think of it as the Marie Kondo approach to coding: keep what sparks joy and ditch the rest.
The Legacy Lives On
It's wild to think that jQuery is still such a crucial part of the web's backbone. Sure, new frameworks like React and Vue are all the rage, but jQuery's simple, reliable charm keeps it in the game. It's a reminder that sometimes the oldies are goodies for a reason.
So, are you still rocking with jQuery, or have you moved on to shinier toys? Slide into the comments and let me know. In the meantime, keep coding and keep questioning the layers that build our digital world.
By Zara Chen, your tech & politics correspondent at Buzzrag.
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