How to check if JSON return is empty with jquery

Question

$.getJSON(url, function(json) {   var output = '';   $.each(json, function(i,d) {      if(d.DESCRIPTION == 'null'){        console.log("Its empty");     }     var description = d.DESCRIPTION;     output += '<tr><td>'+d.NAME+'</td><td>'+'<tr><td>'+d.DESCRIPTION+'</td><td>';   }); }); 

I tried adding the

if(d.DESCRIPTION == 'null'){ console.log("Its empty");  

to check if the object returned is empty, but it doesn't work.

Can someone explain to me what's wrong with this?

Answer 1

Below code(jQuery.isEmptyObject(anyObject) function is already provided) works perfectly fine, no need to write one of your own.

   // works for any Object Including JSON(key value pair) or Array.   //  var arr = [];   //  var jsonObj = {};     if (jQuery.isEmptyObject(anyObjectIncludingJSON))     {        console.log("Empty Object");     } 

Answer 2

Just test if the array is empty.

$.getJSON(url,function(json){     if ( json.length == 0 ) {         console.log("NO DATA!")     } });