Determine the quantity of items stored in a database using AJAX and JSON in ASP.NET

Question

Determine the quantity of items stored in a database using AJAX and JSON in ASP.NET

I am trying to count the elements in my database using ajax/json in asp.net with a GET method. This is what I have so far:

// GET: /People/
public JsonResult Index()
        {
            var count = db.People.ToList().Count;
            return Json(count);
        }

Here is the JavaScript code:

   function check_count() {
     var how_many=$.ajax(
          {
              type:'GET',
              url:'/People/',
              success: function(data){
                  alert('successful');
              }

          });

          }

javascript asp.net ajax json

Answer 1

Answer №1

Everything in your code seems fine, but there is a small issue:

var count = $.ajax({
    // ...
});

When you make an AJAX call, it returns a "promise" that allows you to chain actions together and handle errors efficiently.

The reason for this is that AJAX calls are asynchronous, meaning they start executing and will finish at some point in the future. The line containing your alert('successful'); will only run once the call has completed.

To properly handle your data, consider modifying your code like so:

$.ajax({
    type: 'GET',
    url: '/Items/',
    success: function(data) {
        console.log(data);
        // Use this as a breakpoint to inspect the returned data
        debugger;
    }
});

If you have debugging tools enabled in your browser, you can easily examine the data received and determine the necessary course of action from there.

Answer 2

Everything in your code seems fine, but there is a small issue:

var count = $.ajax({
    // ...
});

When you make an AJAX call, it returns a "promise" that allows you to chain actions together and handle errors efficiently.

The reason for this is that AJAX calls are asynchronous, meaning they start executing and will finish at some point in the future. The line containing your alert('successful'); will only run once the call has completed.

To properly handle your data, consider modifying your code like so:

$.ajax({
    type: 'GET',
    url: '/Items/',
    success: function(data) {
        console.log(data);
        // Use this as a breakpoint to inspect the returned data
        debugger;
    }
});

If you have debugging tools enabled in your browser, you can easily examine the data received and determine the necessary course of action from there.

Determine the quantity of items stored in a database using AJAX and JSON in ASP.NET

Answer №1

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