vue-json-pointer

Basic fork of json-pointer using Vue.set and Vue.delete to work with Vue reactivity system. If you're not using Vue is safer to use the original library

Installation

node.js

$ npm install vue-json-pointer

API

var pointer = require('vue-json-pointer');

.get(object, pointer)

Looks up a JSON pointer in an object.

Array of reference tokens, e.g. returned by api.parse, can be passed as a pointer to .get, .set and .remove methods.

...
state: {
    obj: {
        example: {
            bla: 'hello'
        }
    }
}
...
pointer.get(state.obj, '/example/bla');

.set(object, pointer, value)

Sets a new value on object at the location described by pointer.

...
state: {
    obj: {}
}
...
pointer.set(state.obj, '/example/bla', 'hello');

.remove(object, pointer)

Removes an attribute of object referenced by pointer.

...
state: {
    obj: {
        example: 'hello'
    }
}
...
pointer.remove(state.obj, '/example');
// state.obj -> {}

.dict(object)

Creates a dictionary object (pointer -> value).

var obj = {
    hello: {bla: 'example'}
};
pointer.dict(state.obj);
 
// Returns:
// {
//    '/hello/bla': 'example'
// }

.walk(object, iterator)

Just like:

each(pointer.dict(obj), iterator);

.has(object, pointer)

Tests if an object has a value for a JSON pointer.

var obj = {
    bla: 'hello'
};
 
pointer.has(obj, '/bla');               // -> true
pointer.has(obj, '/non/existing');      // -> false

.escape(str)

Escapes a reference token.

pointer.escape('hello~bla');            // -> 'hello~0bla'
pointer.escape('hello/bla');            // -> 'hello~1bla'

.unescape(str)

Unescape a reference token.

pointer.unescape('hello~0bla');         // -> 'hello~bla'
pointer.unescape('hello~1bla');         // -> 'hello/bla'

.parse(str)

Converts a JSON pointer into an array of reference tokens.

pointer.parse('/hello/bla');            // -> ['hello', 'bla']

.compile(array)

Builds a json pointer from an array of reference tokens.

pointer.compile(['hello', 'bla']);      // -> '/hello/bla'

pointer(object, [pointer, [value]])

Convenience wrapper around the api.

pointer(object)                 // bind object
pointer(object, pointer)        // get
pointer(object, pointer, value) // set

The wrapper supports chainable object oriented style.

var obj = {anything: 'bla'};
var objPointer = pointer(obj);
objPointer.set('/example', 'bla').dict();