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object-walk

object-walk

Walks through an object executing user defined functions at every node on the way down and back up. Functions will be given three arguments: the value of the current node, the name of the current node, and the object being being walked through. This roughly resembles the callback signature of Array.prototype.map.

Installation

npm install object-walk

Usage

In node:

objectWalk = require('object-walk');
var obj = {
    child1 : {
        data : "some data"
    },
    child2 : {
        data : "some data"
    }
};
function descentionFn (val, prop, obj) {
    if (val === "some data") {
        obj[prop] = "changed";
    }
}
objectWalk(obj, descentionFn);
var obj = {
    child1 : {
        data : {
            child3 : {
                data : "some data"
            },
            child4 : {
                data : "some data"
            }
        }
    },
    child2 : {
        data : "some data"
    }
};
function ascentionFn (val, prop, obj) {
    if (prop === "data") {
        delete obj[prop].child3;
    }
    if (prop === "child4") {
        obj[prop].data = "changed";
    }
}
objectWalk(obj, null, ascentionFn);

In the browser, include ./browser/object-walk_web.js in your page. objectWalk will be available in your page.