Develop Reference

"Error : Cannot use 'in' operator to search for 'length' in [{"ID":"2","Name":"EAA2"}]" when performing $.each

What ever I do, I keep getting the same error. The only thing I have found that might of helped is the JSON.parse, but I still get the same problem. console log gives data as [{"ID":"2","Name":"EAA2"}]
I split it into two functions as I didn't want to keep going back to the api everytime a user selects/de-selects an option.
I have also tried the following:
Changing vars to lets
Passing data.d from the update to the populate
function populateAvailableAuthorities() {
var list = $('#availableAA');
var data = JSON.parse($('#AAJSON').val());
var auths = $('#tbSelectedAA').val();
list.empty();
$.each(data, function (key, entry) {
if (!~auths.indexOf(entry.ID + ';')) {
list.append($('<option></option>').attr('value', entry.ID).text(entry.Name));
}
});
}
function updateListboxes() {
var teams = '';
let aa = $('#AAJSON');
aa.empty();
$('#cblTeams input:checked').each(function () {
teams += $(this).attr('value') + ',';
});
if (teams.length > 1) {
teams = teams.substr(0, teams.length - 1);
$.ajax({
type: "POST",
url: '<%# ResolveUrl("~/api/Authorities.asmx/FetchByTeam") %>',
data: '{teams: "' + teams + '"}',
dataType: 'json',
contentType: "application/json; charset=utf-8",
success: function (data) {
aa.val(JSON.stringify(data.d));
populateAvailableAuthorities();
}
});
}
}

It would seem that "over-stringifying" is an issue with JSON. If I doubled the JSON.parse or removed the JSON.stringify it all works correctly.
Annoying!!

How to read data using JSONP, Ajax and jquery?

I am trying to read data from this API, but it is not working, I have an input box where I enter the isbn number and then get the data, using jsonp. Could you possibly help me in identifying where my error("Cannot read property 'title' of undefined") is?
function add(){
var isbn = parseInt($("#isbn").val());
var list = $("#list");
console.log(parseInt(isbn));
$.ajax({
url: "https://openlibrary.org/api/books?bibkeys=" + isbn + "&jscmd=details&callback=mycallback",
dataType: "jsonp",
success: function(isbn){
var infoUrl = isbn.info_url;
var thumbnailUrl = isbn.thumbnail_url;
var title = isbn.details.title;
var publishers = isbn.details.publishers;
var isbn13 = isbn.details.isbn_13;
console.log(isbn.info_url);
}
});
}

Open Library's API expects bibkeys to be prefixed with their type and a colon, rather than just the number alone:
function add(){
var isbn = 'ISBN:' + $("#isbn").val();
// ...
The colon also means the value should be URL-encoded, which jQuery can do for you:
$.ajax({
url: "https://openlibrary.org/api/books?jscmd=details&callback=?",
data: { bidkeys: isbn },
dataType: "jsonp",
Then, the data it returns reuses the bibkeys you provided as properties:
{ "ISBN:0123456789": { "info_url": ..., "details": { ... }, ... } }
To access the book's information, you'll have to first access this property:
success: function(data){
var bookInfo = data[isbn];
console.log(bookInfo.details.title);
// etc.
}
Example: https://jsfiddle.net/3p6s7051/
You can also retrieve the bibkey from the object itself using Object.keys():
success: function (data) {
var bibkey = Object.keys(data)[0];
var bookInfo = data[bibkey];
console.log(bookInfo.details.title);
// ...
}
Note: You can use this to validate, since the request can be technically successful and not include any book information (i.e. no matches found):
success: function (data) {
var bibkeys = Object.keys(data);
if (bibkeys.length === 0)
return showError('No books were found with the ISBN provided.');
// ...
Example: https://jsfiddle.net/q0aqys87/

I asked a professor, and this is how she told me to solve it:
function add(){
var isbn = parseInt($("#isbn").val());
var list = $("#list");
console.log(parseInt(isbn));
$.ajax({
url: "https://openlibrary.org/api/books?bibkeys=" + isbn + "&jscmd=details&callback=mycallback",
dataType: "jsonp",
success: function(data){
var thumb=data["ISBN:"+isbn+""].thumbnail_url;
....
}
});
}

JQuery AutoComplete with JSON Result Not Working

I am using a JQuery autocomplete to display a list of available courses. I am doing a post to get a list of Courses from the server, I manipulate the data to be in the expected format, and I pass it to the autocomplete function. The problem is that it does not work unless I hard copy and paste the values newSource and paste them into source.
The variable newSource = ["Enc1001","ENC1002","Enc1003","ENC1101"....etc].
The ajax post to get the data from the server
//Auto complete for search box
$('#AdditionalSearch').on('input', function () {
var source = [];
var inputValue = $('#AdditionalSearch').val();
if (inputValue !== '') { //the value is not empty, we'll do a post to get the data.
url = "/Course/CourseSearch";
$.ajax({
method: 'POST',
dataType: 'json',
contentType: 'application/json',
cache: false,
data: JSON.stringify({ "searchCourseValue": inputValue }),
url: url,
success: function (data) {
if (data.Ok) {
var myData = JSON.parse(data.data);
var newSource = '[';
$.each(myData.ResultValue, function (index, item) {
if ((myData.ResultValue.length -1) == index)
newSource += '"' + item.Name+'"';
else
newSource += '"'+ item.Name + '",';
});
newSource += "]";
console.log(newSource);
source = newSource;
}
setNameAutoComplete(source);
},
error: function (jqXHR) {
console.log(error);
}
});
} else { //The user either delete all the input or there is nothing in the search box.
//The value is empty, so clear the listbox.
setNameAutoComplete(source);
}
});
//Passing the source to the auto complete function
var setNameAutoComplete = function (data) {
console.log(data);
$('#AdditionalSearch').autocomplete({
source: data
});
}
Is there something that I am missing here?

When you literally paste newSource = ["Enc1001","ENC1002","Enc1003","ENC1101"....etc]in your code, you are building an array object. However, in your success method, you are building a string (the string-representation of that same object). What you want to be doing is build an actual array in stead.
...
success: function (data) {
if (data.Ok) {
var myData = JSON.parse(data.data);
var newSource = [];
$.each(myData.ResultValue, function (index, item) {
newSource.push(item.Name);
});
console.log(newSource);
source = newSource;
}
setNameAutoComplete(source);
},
...

Pass Json Object and String Value at once in Ajax

I want to pass a Json Object and String Value together in ajax call. I have attached my code below.
$('#ddcountryid').change(function () {
var jdata = ko.mapping.toJSON(viewModel);
var Cid = $(this).val();
//alert(intCountry);
$.ajax({
url: '#Url.Action("PopulateDropDown", "Pepmytrip")',
type: 'POST',
data: jdata,
dataType: "json",
contentType: "application/json; charset=utf-8",
success: function (data) {
if (data.redirect) {
location.href = resolveUrl(data.url);
}
else {
ko.mapping.fromJS(data, viewModel);
}
},
error: function (error) {
alert("There was an error posting the data to the server: " + error.responseText);
},
});
});
My Action Method
public JsonResult PopulateDropDown(Wrapper wrapper, string cID)
{
wrapper.Destinations = new SelectList(context.Destinations.Where(c=>c.CountryId == cID), "id", "Name").ToList();
return Json(wrapper);
}
I am getting wrapper object with Values, but how can get the CID as well. Can anyone please help me on this??.

you can pass it as query string parameter:
var Cid = $(this).val();
$.ajax({
url: '#Url.Action("PopulateDropDown", "Pepmytrip")' + '?cID=' + Cid,
...
server side:
public JsonResult PopulateDropDown(Wrapper wrapper, string cID)
{
wrapper.Destinations = new SelectList(context.Destinations.Where(c=>c.CountryId == cID), "id", "Name").ToList();
return Json(wrapper);
}
OR add a new property to your Wrapper object as Gavin Fang suggested:
var Cid = $(this).val();
viewModel.Cid = Cid;
var jdata = ko.mapping.toJSON(viewModel);
server side code:
public JsonResult PopulateDropDown(Wrapper wrapper)
{
var cid = wrapper.Cid;
wrapper.Destinations = new SelectList(context.Destinations.Where(c=>c.CountryId == cID), "id", "Name").ToList();
return Json(wrapper);
}

I think you can add a property to store you 'CID' to your viewModel.
and you can get the CID in the 'success' function in javascript in here, I think.

You can achieve this is two ways:
You can add extra field for existing json 'jdata' by defining field jdata.cid = null; and assigning it as jdata.cid = $(this).val();.
Prepare an object to hold both json data and string value:
var obj = {"json": jdata, "string":$(this).value()};
then pass obj in data parameter

How to break a Json var into specific formate in jquery

I am retrieving values from database and parsing it into JSON .My JSON data formate is like..
[{"INCOMING":"09:09:49","INETCALL":"00:14:09","ISD":"00:05:50","LOCAL":"02:38:02","STD":"01:39:28"}]
I want to break this JSON value into two variables one is:
var toc=["INCOMING","INETCALL","ISD","LOCAL","STD"]
and the other variable like this..
var callduration=["09:09:49","00:14:09","00:05:50","02:38:0","01:39:28"]
Now as per my need i have to break it into two variables for that i have written a for loop but it is not working .Here is my Client side code..
$.ajax({
type: 'GET',
url: 'getdataduration',
async:false,
dataType: "text",
success: function(data) {
console.log(data);
var dbdata=JSON.parse(data);
console.log(dbdata);
for(var i=0,len=dbdata.length;i<len;i++){
$.isNumeric(dbdata[i]) ? callduration.push(dbdata[i]) : toc.push(dbdata[i]);
}
}
});
console.log(toc);
console.log(callduration);
Please guys help me .
Thanks in advance..

This is how you would work witih that...
var data = [{"INCOMING":"09:09:49","INETCALL":"00:14:09","ISD":"00:05:50","LOCAL":"02:38:02","STD":"01:39:28"}];
console.log(data);
console.log( data[0].INCOMING ); // 09:09:49
console.log( data[0]['INCOMING'] ); // 09:09:49
var keys = Object.keys(data[0]);
console.log(keys); // ["INCOMING", "INETCALL", "ISD", "LOCAL", "STD"]
var values = [];
var keys = [];
$.each(data,function(i,val){
console.log(val); // Object {INCOMING: "09:09:49", INETCALL: "00:14:09", ISD: "00:05:50", LOCAL: "02:38:02", STD: "01:39:28"}
$.each(val,function(key2,val2){
console.log(key2 + " = " + val2);
keys.push(key2);
values.push(val2);
// INCOMING = 09:09:49
// INETCALL = 00:14:09
// ISD = 00:05:50
// LOCAL = 02:38:02
// STD = 01:39:28
});
});
console.log(keys); // ["INCOMING", "INETCALL", "ISD", "LOCAL", "STD"]
console.log(values); // ["09:09:49", "00:14:09", "00:05:50", "02:38:02", "01:39:28"]

Can you try this,
$(function(){
var toc = [];
var callduration =[];
$.ajax({
type: 'GET',
url: 'getdataduration',
async:false,
dataType: "text",
success: function(data) {
// console.log(data);
var dbdata=JSON.parse(data);
// console.log(dbdata);
$.each(dbdata[0], function(key, value){
console.log(key, value);
toc.push(key);
callduration.push(value)
});
}
});
console.log(toc);
console.log(callduration);
});
Output Console:
["INCOMING", "INETCALL", "ISD", "LOCAL", "STD"]
["09:09:49", "00:14:09", "00:05:50", "02:38:02", "01:39:28"]