README

Json Pointer

Here is a solid json-pointer implementation. The main differences to this implementation are

conforms to RFC 6901
throws an error when a value is not found / the pointer is invalid
additional utilities

This json-pointer implementation will return undefined if the pointer could not be resolved, which allows checks like if (pointer.get(data, "#/path/to/nested/item") {...} instead of if (path && path.to && path.to.nested ....

This library exposes

jsonpointer.get
jsonpointer.set and
jsonpointer.delete

install

npm i @sagold/json-pointer

pointer.get

    var data = {
        parent: {
            child: {
                title: "title of child"
            }
        }
    }

    var titleOfChild = pointer.get(data, "#/parent/child/title"); // "title of child"

pointer.set

set values on an object

    var data = {
        parent: {
            children: [
                {
                    title: "title of child"
                }
            ]
        }
    };

    pointer.set(data, "#/parent/children/1", {title: "second child"});
    console.log(data.parent.children.length); // 2

pointer.delete

delete properties or array items

    pointer.delete(data, "#/parent/arrayOrObject/1");

Helpers

pointer.join

pointer.join joins all arguments to a valid json pointer:

    var key = "child";
    var target = pointer.join("parent", key, "title"); // "#/parent/child/title"

Usage no npm install needed!