Question

I am trying to save a user’s input once they have clicked on another control on the page. I had a look at the focusout event but it fires every time user enters value or selects another control. here is how i used it:

        $('#txt_ComplainingAbout').focusout(function (e) {
             $.ajax({
                    type: "POST",
                    url: "Form.aspx/Save",
                    data: "{'id': '" + this.value + "','value': '" + this.value + "'}",
                    contentType: "application/json; charset=utf-8",
                    dataType: "json",

                    success: function (msg) {
                        if (msg.d == 'success') {

                        }
                    }

                });
            e.preventDefault();
        });

Is there any other way to call the above ajax call per control?

Answer 1

Would the blur event not give you the behavior you want?

Also, have you looked at a delegated event? With a delegated approach you use a single event handler to deal with events raised by multiple elements. So if you had a table with 10,000 cells, and you wanted to perform some action on click, instead of attaching an event handler to every one – which would be costly for performance – we attach one event handler to the table which is delegated to handle all events.

So following this paradigm, you could always have a single event handler for a form which handles every input in that form.

$("form").on("blur", ":input", function(e) {
    // this refers to whichever form element triggered the event
    var $this;

    $.ajax({
        type: "POST",
        url: "Form.aspx/Save",
        data: "{'id': '" + $this.attr("id") + "','value': '" + $this.val() + "'}",
        contentType: "application/json; charset=utf-8",
        dataType: "json",

        success: function (msg) {
            if (msg.d == 'success') {

            }
        }

    });

    e.preventDefault();

});