javascript - How do I solve 'Uncaught TypeError: Cannot use 'in' operator to search for 'length' in' and get my data to show up -


when make ajax request iterate on multiple arrays

uncaught typeerror: cannot use 'in' operator search 'length' in

 $.get(url).done(function(data){  var data = json.stringify(data);  var reviews = [];  var output = '<div>';  $.each( data, function( k, v ) {  $.each( data[k].mealreviews, function( key, value ) {     output += '<div class="row">';     output += '<div class="col-sm-3 col-sm-offset-1 col-md-3 col-md-offset-1"><img class="img-thumbnail" src="images/' + value.accounttype +'.png" width="200" height="200" alt="">';     output += '<p>by <a>'+ value.username +'</a> '+ value.reviewdate +'</p></div>';     output += '<div class="col-sm-8 col-md-8"><div class="row">';     output += '<h2>'+ value.rating +'<span class="glyphicon glyphicon-star"></span> '+ value.subject +'</h2>';     output += '<p class="textformat">'+ value.review +'</p></div></div>';     output += '</div>'; }); });   output += '</div>';  reviews.push(output);  $( '#mealdetails' ).append(output);  });

var data = json.stringify(data); intended turn existing json object string. once it's string, can call string functions on it. can't can normal object. you're getting error because turned data string, , tried treat object. it's possible, since used jquery $.get data already string, because didn't specify json return datatype in ajax call, , therefore stringify function had no effect.

you should able change code work:

$.getjson(url).done(function(data){   var reviews = [];   var output = '<div>';   $.each( data, function( k, v ) {   //...etc

the getjson method downloads data json format automatically you. https://api.jquery.com/jquery.getjson/


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