# TestJsonToken Method
Test whether the specified JSON token exists or does not.

## Syntax
```javascript
	[Boolean := ] TestJsonToken(json: JsonObject; keyName: Text)
```

## Parameters
### *json*
Type: JsonObject<br/>
JSON object containing the requested token.
### *keyName*
Type: Text<br/>
Requested key name as string.

## Return Value
### *Boolean*
True if JSON token exist.