new Walker(data, propExpression)
Traverses an object based on the property expression. Given a property expression, this will
recursively evaluate each property within the expression until all properties have been evaluated.
Parameters:
| Name | Type | Description |
|---|---|---|
data |
object | Object being traversed |
propExpression |
string | A string containing a property expression to evaluate |
Members
(inner) isPrimitive
Determines which object is a primitive type
(inner) targetKey
The current key in an expression to evaluate
(inner) targetProps
The keys in a property expression that must be processed
(inner) useIndex
Flag to indicate whether to retrieve a value from an array using its number
based index or an objects key within an array
Methods
(static) find(obj, props)
Recursively walks an object to reach the property expression.
Continuing from our example in the parseKeys() method below, assume we start with the following
expression:
'd.name in pets.dogs'
targetKey => 'name'
targetProps => ['pets', 'dogs']
This method will evaluate each property in the targetProps array against the current obj (on first iteration)
or against the preceding expression evaluation until all have been processed.
Once at the end,
we evalute the targetKey against the last targetProp. So in this case, we would end up evaluation the
`name` property in an object within a dogs array.
Parameters:
| Name | Type | Description |
|---|---|---|
obj |
object | Object to traverse |
props |
props | Array of split property expressions. |