How to extract array element without key?

I have a json as below. I want a json path expression that checks if [e3] exists in the below json. Can someone help please?

    "status": "ok",
    "error": [


The below JSONPath will return a list with one element. Indefinite paths always returns a list. A path is indefinite if it contains an expression – ?(<expression>). Refer What is Returned When?

$.error[?(@ == '[e3]')]

Jayway JsonPath