jquery perform something based on empty ([]) JSON string

Question

Im getting returned JSON like this

{"d":{"questions":[],"stuff":"value"}}

how do I check for questions and do something if its blank/empty IE the [] with nothing inside?

This doesn't work:

var msg = data.d.IsErrorExists;
var quetions = data.d.questions;
if (msg == 'false' && questions === '[]') {
        //do stuff based on msg=false and questions=[]
      }

Thilo · Accepted Answer · 2014-11-11 03:15:24Z

1

You could check if the length of the array is greater than zero:

 if (questions.length){
 }

answered Nov 11, 2014 at 3:15

Thilo

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3 Comments

Dirty Bird Design Over a year ago

So if (msg == 'false' && questions.length) {//do something }?

Thilo Over a year ago

probably if (!msg && !questions.length)

Dirty Bird Design Over a year ago

so that will check for NO msg and No qustions, just remove the first ! to check FOR msg and no questions right?

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