Jsondiffpatch FAQs

Question 1

What is jsondiffpatch?

Accepted Answer

Jsondiffpatch is a JavaScript library for comparing two JavaScript objects and generating a 'delta' that represents the differences. It can then 'patch' one object to match the other using this delta. It's useful for data synchronization, undo/redo functionality, and more.

Question 2

How do I install jsondiffpatch?

Accepted Answer

You can install jsondiffpatch using npm: `npm install jsondiffpatch`.  Alternatively, you can use a browser bundle from esm.sh or Skypack.

Question 3

How does jsondiffpatch handle array diffing?

Accepted Answer

Jsondiffpatch uses the Longest Common Subsequence (LCS) algorithm for intelligent array diffing.  You can also provide an `objectHash` function to match objects within the array based on a specific property, ensuring accurate change detection.

Question 4

Can I customize the diffing process?

Accepted Answer

Yes, jsondiffpatch is highly customizable. You can configure options like `objectHash` for array comparisons, `textDiff.minLength` for text diffing, and `propertyFilter` to ignore specific properties during diffing.  You can also extend its functionality using plugins.

Question 5

What are the key features of jsondiffpatch?

Accepted Answer

Key features include deep diffing and patching, smart array diffing using the LCS algorithm, optional text diffing for large strings, delta reversal and unpatching, and support for multiple output formats like JSON and HTML.

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