Develop Reference

how to replace single quotes with double qoute in jq

I have some thing like this.."Skin','Hair"...
i want result like this ['Skin', 'Hair'];
I tried this
type: 'GET',
url: '/HOME/Getselecteddata',
dataType: 'json',
data: { id: 8 },
success: function (data) {
debugger;
var endString = data.replace(/"/g, "'");
var selectedCodeWBs = [data]
$(".tokenizationSelect2").val(selectedCodeWBs).trigger('change');
Not working. please someone help me
my controller code:
public ActionResult Getselecteddata(int id)
{
var data = db.Segments.Where(x => x.Id == 7003).Select(x => x.Segname).SingleOrDefault();
List<string> segmentdata = new List<String>(data.Split(','));
string s2 = String.Join("','", segmentdata);
return Json(s2, JsonRequestBehavior.AllowGet);
}

You can much better do this:
return Json(segmentdata, JsonRequestBehavior.AllowGet);
Using segmentdata directly will work 100% better than creating a messy string variable that contains unbalanced quotes.
MVC Json() is perfectly capable of working with a List, it will output it as JSON array notation. Then in your javascript the received value in data will already be a Javascript array that won't need further manipulating.

How I send the result of the AJAX back to the JSP?

I post some via AJAX in my servet from my jsp
$.ajax({
url: 'myServlet?action=FEP',
type: 'post',
data: {machine: i, name: txt}, // i, txt have some values.
success: function (data) {
alert('success');
}
});
and in my Serlvlet
String jspAction = request.getParameter("action");
//...
if(jspAction.equals("FEP")){
int idMachine = Integer.parseInt(request.getParameter("machine"));
String name = request.getParameter("name");
double value = actions.getValue(idMachine, name); //<-- this variable I want to send it back to the JSP.
}
The data are sent succesfully. However I haven't understand how I send back the vaule to the jsp..

returning a string would go as follows:
response.getWriter().write("a string");
return null;
If you want to return json, you can use many libraries like: http://www.json.org/
This would result in something like following code:
response.setContentType("application/json");
JSONObject jsonObject = new JSONObject();
double aDouble = 38d;
jsonObject.put("returnValue", aDouble);
response.getWriter().write(jsonObject.toString());
return null;

Use
response.getWriter().write(value);
return null;
And in your ajax success block access the value.
See the following link for more understanding http://www.javacodegeeks.com/2014/09/jquery-ajax-servlets-integration-building-a-complete-application.html

How to print array list data using ajax?

I am new to AJAX and JSON. I have an ArrayList which contains another ArrayList and I converted the whole array in to JSON object:
#Produces(MediaType.APPLICATION_JSON)
public String getRecords(#QueryParam("mobile_no") String mobilenumber) {
UserActivityDelegate delegate = new UserActivityDelegate();
List<AssessmentDTO> list = delegate.getLastFiveAssessment(mobilenumber
.trim());
if (list.isEmpty())
return "Sorry....You have not attended any assessment";
else {
System.out.println(list);
return (new Gson()).toJson(list);
}
Now I want to know how can I retrieve or iterate the response object in JSP using ajax??

In Ajax response you receive a response string you can convert that either to javascript list or json and iterate over them.
Like below:
jQuery.ajax({
type: 'POST',
url: your_url_string,
data: 1=1 //params,
async: false,
success: function(response,textStatus){
json= JSON.parse(response);
},
error:function(XMLHttpRequest,textStatus,errorThrown){}
});
then json object is what you need to take care of.

Passing string array from ASP.NET to JavaScript

I am trying to call the server side from JavaScript and then pass a string array back to JavaScript, but running into problems.
// Call the server-side to get the data.
$.ajax({"url" : "MyWebpage.aspx/GetData",
"type" : "post",
"data" : {"IdData" : IdData},
"dataType" : "json",
"success": function (data)
{
// Get the data.
var responseArray = JSON.parse(data.response);
// Extract the header and body components.
var strHeader = responseArray[0];
var strBody = responseArray[1];
// Set the data on the form.
document.getElementById("divHeader").innerHTML = strHeader;
document.getElementById("divBody").innerHTML = strBody;
}
});
On the ASP.Net server side, I have:
[WebMethod]
[ScriptMethod(ResponseFormat = ResponseFormat.Json)]
public static object GetTip(String IdTip)
{
int iIdTip = -1;
String[] MyData = new String[2];
// Formulate the respnse.
MyData[0] = "My header";
MyData[1] = "My body";
// Create a JSON object to create the response in the format needed.
JavaScriptSerializer oJss = new JavaScriptSerializer();
// Create the JSON response.
String strResponse = oJss.Serialize(MyData);
return strResponse;
}
I am probably mixing things up, as I am still new to JSON.
UPDATE with error code:
Exception was thrown at line 2, column 10807 in http://localhost:49928/Scripts/js/jquery-1.7.2.min.js
0x800a03f6 - JavaScript runtime error: Invalid character
Stack trace:
parse JSON[jquery-1.7.2.min.js] Line 2
What is my problem?

I modified your ajax call script to :
// Call the server-side to get the data.
$.ajax({
url: "WebForm4.aspx/GetTip",
type: "post",
data: JSON.stringify({ IdTip: "0" }),
dataType: "json",
contentType: 'application/json',
success: function (data) {
// Get the data.
var responseArray = JSON.parse(data.d);
// Extract the header and body components.
var strHeader = responseArray[0];
var strBody = responseArray[1];
// Set the data on the form.
document.getElementById("divHeader").innerHTML = strHeader;
document.getElementById("divBody").innerHTML = strBody;
}
});
Note that I added contentType: 'application/json' and changed
var responseArray = JSON.parse(data.response);
to
var responseArray = JSON.parse(data.d);

This s purely out of guess work. But see if this is what you are getting:-
In your Ajax call, your data type is json and looking at the method you are returning a json string. So you do not need to do JSON.parse(data.response). Instead just see if the below works for you. Also i dont see a response object in your Json, instead it is just an array. So it must be trying to parse undefined
var strHeader = data[0];
var strBody = data[1];

How can I output javascript to a view in asp.net mvc3?

Good morning All,
I have a javascript variable in my view. I keep doing this...
var skinData = null;
and then on document.ready....
$.ajax({
type: 'POST',
url: 'theme/getskins',
data: {},
contentType: 'application/json; charset=utf-8',
success: function(data){
skinData = data;
}
});
my question is why am I doing this on after the view has loaded. I'm trying to do this in _ViewStart.cshtml
viewPage.ViewBag.SkinInfo = new JsonResult { Data = SkinManager.GetSkins() };
How can I take this value and output its value to my javascript variable. I don't think I need to do another request when I really want to push this to the client on the first trip. Any tips or advice is of course appreciated. How can I do this correctly? I tried a few variations of this but it obvious isn't working. Stuff like...
var skinData = #ViewBag.SkinInfo.Data;
This just outputs the namespace. Any ideas how to do this correctly?
Cheers,
~ck in San Diego

You will want to use some a serializer to convert your .GetSkins() method result into a json object. Either the built in JavaScriptSerializer or json.net
JavaScriptSerializer serializer = new JavaScriptSerializer();
viewPage.ViewBag.SkinInfo = serializer.Serialize(SkinManager.GetSkins());
And then in your view
var skinData = #Html.Raw(ViewBag.SkinInfo);

Here's a way of doing it using a Html helper. It will convert your object into json and put it into a javascript variable.
HtmlHelper extension method
public static MvcHtmlString Jsonize(this HtmlHelper helper, string variableName, object obj)
{
StringBuilder str = new StringBuilder();
str.Append("<script type='text/javascript'>");
str.Append("var ");
str.Append(variableName);
str.Append("=");
if (obj == null)
str.Append("null");
else
str.Append(JsonHelper.Serialize(obj));
str.Append(";");
str.Append("</script>");
return MvcHtmlString.Create(str.ToString());
}
The json serializer. I'm using the DataContractJsonSerializer in this case.
public class JsonHelper
{
public static string Serialize(object obj)
{
string json = null;
DataContractJsonSerializer serializer = new DataContractJsonSerializer(obj.GetType());
using (MemoryStream ms = new MemoryStream())
{
serializer.WriteObject(ms, obj);
json = Encoding.Default.GetString(ms.ToArray());
}
return json;
}
}
Once you have that done, you can just use it in your views to create a javascript variable that contains your object
#Html.Jsonize("data", ViewBag.SkinInfo.Data);
which will create something like this:
<script type='text/javascript'>
var data = { your serialized object };
</script>