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# delve
Delve recursively into a value to retrieve a property; without erroring.
[](http://ci.testling.com/hughfdjackson/delve)
## Why
It sucks to have to do `if ( obj && obj.prop && obj.prop.secondProp ) { ... }`.
## Example
### delve
```javascript
var delve = require('delve')
var o = { x: { y: { z: 'my val' } } }
delve(o, 'x.y') //= { z: 'my val' }
delve(o, 'x.y.z') //= 'my val'
delve(o, 'x.y.z.foo') //= undefined
delve(undefined, 'x.y.z.foo') //= undefined
delve(null, 'x.y.z.foo') //= undefined
delve('foo', 'length') //= 3
```
### delve.has
```javascript
var delve = require('delve')
delve.has({ x: { y: undefined } }, 'x.y') //= true
delve.has('foo', 'length') //= true
delve.has(null, 'foo') //= false
delve.has({ x: { } }, 'x.y') //= false
```
For more examples, see tests/delve-test.js.
## Install
### npm
```bash
npm install delve
```
### browser
Download src/delve.js, and include it as a script tag.
### AMD/require.js
Download src/delve.js, and require it in:
```javascript
require(['libs/delve'], function(delve){
// ... assuming delve is in libs/delve, now it's ready to use
})
```
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