110 lines
2.3 KiB
Markdown
110 lines
2.3 KiB
Markdown
[](https://travis-ci.org/mickhansen/dottie.js)
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Dottie helps you easily (and without sacrificing too much performance) look up and play with nested keys in objects, without them throwing up in your face.
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## Install
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npm install dottie
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## Usage
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For detailed usage, check source or tests.
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### Get value
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Gets nested value, or undefined if unreachable, or a default value if passed.
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```js
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var values = {
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some: {
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nested: {
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key: 'foobar';
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}
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},
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'some.dot.included': {
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key: 'barfoo'
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}
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}
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dottie.get(values, 'some.nested.key'); // returns 'foobar'
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dottie.get(values, 'some.undefined.key'); // returns undefined
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dottie.get(values, 'some.undefined.key', 'defaultval'); // returns 'defaultval'
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dottie.get(values, ['some.dot.included', 'key']); // returns 'barfoo'
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```
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*Note: lodash.get() also works fine for this*
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### Set value
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Sets nested value, creates nested structure if needed
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```js
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dottie.set(values, 'some.nested.value', someValue);
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dottie.set(values, ['some.dot.included', 'value'], someValue);
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dottie.set(values, 'some.nested.object', someValue, {
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force: true // force overwrite defined non-object keys into objects if needed
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});
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```
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### Transform object
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Transform object from keys with dottie notation to nested objects
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```js
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var values = {
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'user.name': 'Gummy Bear',
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'user.email': 'gummybear@candymountain.com',
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'user.professional.title': 'King',
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'user.professional.employer': 'Candy Mountain'
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};
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var transformed = dottie.transform(values);
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/*
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{
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user: {
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name: 'Gummy Bear',
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email: 'gummybear@candymountain.com',
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professional: {
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title: 'King',
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employer: 'Candy Mountain'
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}
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}
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}
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*/
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```
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#### With a custom delimiter
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```js
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var values = {
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'user_name': 'Mick Hansen',
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'user_email': 'maker@mhansen.io'
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};
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var transformed = dottie.transform(values, { delimiter: '_' });
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/*
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{
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user: {
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name: 'Mick Hansen',
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email: 'maker@mhansen.io'
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}
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}
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*/
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```
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### Get paths in object
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```js
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var object = {
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a: 1,
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b: {
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c: 2,
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d: { e: 3 }
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}
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};
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dottie.paths(object); // ["a", "b.c", "b.d.e"];
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```
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## Performance
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`0.3.1` and up ships with `dottie.memoizePath: true` by default, if this causes any bugs, please try setting it to false
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## License
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[MIT](https://github.com/mickhansen/dottie.js/blob/master/LICENSE)
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