Iterate value in jquery

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Hi All,

In my javascript i want to iterate the value. the code is:

JavaScript

function TicketList()
    {
        var self=this;
        self.sample = ko.observableArray([]);
        self.Getjobs = function () {
            
            $.getJSON("/api/ticket", function (data) {
                $.each(data, function (key, val) {
                        
                        self.sample.push(new Ticket(val.JobID, val.CreatedDateTime,val.JobTitle));
                  
                });


            });
        };
    }

here sample containing a jason array list in looping time i want to check the val is containing in the sample.if containing ,dont add data,otherwise add the data to sample.

Posted 31-Jul-13 20:49pm

josh-jw

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Tadit Dash (ତଡିତ୍ କୁମାର ଦାଶ) · Accepted Answer · 2013-07-31T22:58:00

Solution 1

Try with jQuery.inArray()[^].

Something like below...

JavaScript

if(jQuery.inArray(val, self.sample) > 0)
{
    // Exists.
}
else
{
    // Don't exist.
}

But check what exactly is saved in array, if the val is stored in array, then it can be searched directly, otherwise just modify the code accordingly.

Posted 31-Jul-13 22:58pm

Tadit Dash (ତଡିତ୍ କୁମାର ଦାଶ)

Comments

josh-jw 5-Aug-13 3:41am

do you know how to do it in knockout.js?

Tadit Dash (ତଡିତ୍ କୁମାର ଦାଶ) 5-Aug-13 3:48am

Use indexOf function.

Check How to find an element in an observable array in KnockoutJS.

josh-jw 5-Aug-13 4:20am

In that example i am getting id as undefined.

Tadit Dash (ତଡିତ୍ କୁମାର ଦାଶ) 5-Aug-13 4:43am

Which id? Please check your code thoroughly, if there any errors or not.

Ashutosh Mahto · Accepted Answer · 2013-08-02T10:29:00

There isn't any specific way to compare objects in Javascript. So, if you are sure that the objects will be having same key-value pairs, you can use JSON.stringify() and compare the outcome. But, it may not be the exact solution to this problem.

So, here iteration will be better for the check. For that you can use the following code -

JavaScript

function itemExists(targetArray, targetObject) {
  $.each(targetArray, function(i, item){
    if(item.jobID === targetObject.jobID) {
      return true;
    }
    //if job id is not unique then we need to compare all the values
  });
  return false;
}

function TicketList()
{
        var self=this;
        self.sample = ko.observableArray([]);
        self.Getjobs = function () {

            $.getJSON("/api/ticket", function (data) {
                $.each(data, function (key, val) {

                        var newTicket = new Ticket(val.JobID, val.CreatedDateTime,val.JobTitle);

                        //if doesnot exist push into the array
                        if(!itemExists(self.sample, newTicket)) {
                             self.sample.push(newTicket);
                        }
                });
            });
        };
}