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How to deep copy JavaScript objects using structuredClone

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Get Really Good at Git

The modern way to deep copy a JavaScript variable

For years and years we’ve had to use weird workarounds to do a deep clone of a JavaScript object.

Many of those were bug prone.

Like doing JSON.parse(JSON.stringify(obj)) where some types are be ignored.

Or worse, copying object properties by reference, introducing bugs down the road.

Today we have structuredClone() and it’s part of the DOM API.

It’s not part of JavaScript, it’s a DOM API.

It’s available in recent versions of all modern browsers:

It’s also available in Node.js 17+.

Are you intimidated by Git? Can’t figure out merge vs rebase? Are you afraid of screwing up something any time you have to do something in Git? Do you rely on ChatGPT or random people’s answer on StackOverflow to fix your problems? Your coworkers are tired of explaining Git to you all the time? Git is something we all need to use, but few of us really master it. I created this course to improve your Git (and GitHub) knowledge at a radical level. A course that helps you feel less frustrated with Git. Launching Summer 2024. Join the waiting list!
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