Verify if the JSON response contains any data

When the JSON response is empty and viewed in the browser console, it appears like this:

{"data":{},"status":200,"config":{"method":"GET","transformRequest":[null],"transformResponse":[null],"jsonpCallbackParam":"callback","url":"http://url/form/BN217473","headers":{"Accept":"application/json, text/plain, */*"}},"statusText":"","xhrStatus":"complete"}

Although I am attempting to check for an empty response in my angular script, the logic block is not capturing it and remains unexecuted.

if (response.data == '') {
    console.log("no data found");
}

How can I properly verify that my response is indeed not empty?

javascriptangularjs

Answer №1

Check out the code snippet below:

if(!Object.keys(response.data).length){
     console.log("There is no data available");
 }

In case you receive an empty object like data: {}, ensure to verify if there are any keys present within the object.

Answer №2

To determine the number of keys or properties, you can use either 

Object.keys(response.data).length === 0
for a more efficient method or 
JSON.stringify({}) == JSON.stringify(response.data)
for a less efficient approach.

Answer №3

To ensure that your response is not empty, you can use the following code snippet:

if ( json.length == 0 ) {
    console.log("NO DATA!")
}

However, I recommend utilizing lodash and either its isNil() method or isEmpty() function to check for emptiness or null values in your object.

Cheers!

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