1. GroupDocs Documentation
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    3. GroupDocs.Comparison Product Family
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    5. GroupDocs.Comparison for Node.js via Java
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    7. Advanced usage
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    9. Comparison
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    11. Get a list of changes

    Get a list of changes

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    GroupDocs.Comparison allows you to get a list of changes between the source and target documents.

    To get a list of changes, follow these steps:

    1. Instantiate the Comparer object. Specify the source document path or stream.
    2. Call the add() method. Specify the target document path or stream.
    3. Call the compare() method.
    4. Call the getChanges method.

    The following code snippets show how to get a list of all changes:

    Get a list of changes from a local disk 

    const comparer = new groupdocs.comparison.Comparer(source);
comparer.add(target);
comparer.compare();
let changes = comparer.getChanges();
for (ChangeInfo change : changes) {
    Console.log("Change Type: " + change.getType() +
                        ", Page: " + change.getPageInfo().getPageNumber() +
                        ", Change ID: " + change.getId() +
                        ", Text: " + change.getText());
}

    The result is as follows:

    Get a list of changes from a stream 

    const comparer = new groupdocs.comparison.Comparer(new FileInputStream(source));
comparer.add(new FileInputStream(target));
comparer.compare();
let changes = comparer.getChanges();
for (ChangeInfo change : changes) {
    Console.log("Change Type: " + change.getType() +
                        ", Page: " + change.getPageInfo().getPageNumber() +
                        ", Change ID: " + change.getId() +
                        ", Text: " + change.getText());
}

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