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| <br> | |
| pathval | |
| </h1> | |
| <p align=center> | |
| Tool for Object value retrieval given a string path for <a href="http://nodejs.org">node</a> and the browser. | |
| </p> | |
| <p align=center> | |
| <a href="./LICENSE"> | |
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| ## What is pathval? | |
| Pathval is a module which you can use to retrieve or set an Object's property for a given `String` path. | |
| ## Installation | |
| ### Node.js | |
| `pathval` is available on [npm](http://npmjs.org). To install it, type: | |
| $ npm install pathval | |
| ### Browsers | |
| You can also use it within the browser; install via npm and use the `pathval.js` file found within the download. For example: | |
| ```html | |
| <script src="./node_modules/pathval/pathval.js"></script> | |
| ``` | |
| ## Usage | |
| The primary export of `pathval` is an object which has the following methods: | |
| * `hasProperty(object, name)` - Checks whether an `object` has `name`d property or numeric array index. | |
| * `getPathInfo(object, path)` - Returns an object with info indicating the value of the `parent` of that path, the `name ` of the property we're retrieving and its `value`. | |
| * `getPathValue(object, path)` - Retrieves the value of a property at a given `path` inside an `object`'. | |
| * `setPathValue(object, path, value)` - Sets the `value` of a property at a given `path` inside an `object` and returns the object in which the property has been set. | |
| ```js | |
| var pathval = require('pathval'); | |
| ``` | |
| #### .hasProperty(object, name) | |
| ```js | |
| var pathval = require('pathval'); | |
| var obj = { prop: 'a value' }; | |
| pathval.hasProperty(obj, 'prop'); // true | |
| ``` | |
| #### .getPathInfo(object, path) | |
| ```js | |
| var pathval = require('pathval'); | |
| var obj = { earth: { country: 'Brazil' } }; | |
| pathval.getPathInfo(obj, 'earth.country'); // { parent: { country: 'Brazil' }, name: 'country', value: 'Brazil', exists: true } | |
| ``` | |
| #### .getPathValue(object, path) | |
| ```js | |
| var pathval = require('pathval'); | |
| var obj = { earth: { country: 'Brazil' } }; | |
| pathval.getPathValue(obj, 'earth.country'); // 'Brazil' | |
| ``` | |
| #### .setPathValue(object, path, value) | |
| ```js | |
| var pathval = require('pathval'); | |
| var obj = { earth: { country: 'Brazil' } }; | |
| pathval.setPathValue(obj, 'earth.country', 'USA'); | |
| obj.earth.country; // 'USA' | |
| ``` | |