Databranch NPM

JavaScript - DataBranch

A cross-brwoser data mapping tool for JavaScript.

Install

npm

It's recommended to install it as dependency.

npm install --save databranch

browser

Download the databranch.min.js file and include it in your HTML.

<script src="path/to/src/databranch.min.js"></script>

Usage

CommonJS

var DataBranch = require('databranch');
var data = new DataBranch();

Browser

<!--<script src="path/to/src/databranch.min.js"></script>-->
<script>
var data = new DataBranch();
</script>

API

The examples below will use the functions and variables defined below:

var data = new DataBranch();
var arrInst = new Array(1, 2, 3);
var aNull = null;

.set(key, val)

Sets a new key-value pair.

key can be anything except undefined. val can be anything.

data.set(document, document.body);
data.set('hello', 'world');
data.set(0, 1);
data.set(arrInst, ['a', 'b', 'c']);
data.set(aNull, null);

/* OR */

// Methods can be chained
data.set(document, document.body).set('hello', 'world').set(...);

.has(key)

DataBranch compares key using .indexOf under the hood. In other words, key must return true using === in order to match.

data.has(document);     // true
data.has('hello');      // true
data.has('0');          // false, 0 !== '0'
data.has(arrInst);      // true
data.has([1, 2, 3]);    // false, arrInst !== [1, 2, 3]
data.has(null);         // true, aNull === null

.get(key)

data.get(document);     // => <body>...</body>
data.get('hello');      // => 'world'
data.get('0');          // => null
data.get(arrInst);      // => ['a', 'b', 'c']
data.get([1, 2, 3]);    // => null
data.get(null);         // => null

.branch(id)

Creates a branch with id identifier.

data.branch(true);

/* Equals to */

data.set(true, new DataBranch());

It returns the newly created branch. Therefore, you can chain methods to it.

data.branch(true).set(false, '!1');

data.get(true).get(false);
// => '!1'

.of(branch)

To retrieve branch.

data.of(true).get(false);
// => '!1'

The difference between .of and .get is that .of only gets a branch for you and throw if the branch is not found.

data.of(document);
// => Uncaught TypeError: Value of this ID is not a DataBranch branch.

data.of('nonExistentKey');
// => Uncaught ReferenceError: Branch of this ID does not exist.

.size

data.size
// => 6

.delete(key)

data.get(true);
// => DataBranch {...}

data.delete(true);

data.get(true);
// => null

data.size
// => 5

Note: Deleting key/branch will remove all its children data.

.clear()

data.clear();
data.size;
// => 0

data map bind bond set link branch datalink datalinking linking databranch dataset datamap databond databind databinding datamapping mapping binding branching

@everything-registry/sub-chunk-1445 @zalastax/nolb-datab

0.1.0

7 years ago