How to restrict an append String in JavaScript?

Question

Calling JavaScript function on delete

OnclintClick

event will give us the confirmation button message returning

Yes

when clicked

OK

.

The problem is, when clicked a second time, it will append the next String.

ex:
Yes, Yes

JavaScript

function Confirm() {



    var confirm_value



    confirm_value = document.createElement("INPUT");

    confirm_value.type = "hidden";

    confirm_value.name = "confirm_value";



    if (confirm("Are you sure want to delete supplier?")) {

        confirm_value.value = "Yes";

    }



    else {

        confirm_value.value = "No";

    }



    document.forms[0].appendChild(confirm_value);

}

Explanation

The JavaScript Confirm method store the input provided by the user in a dynamically created hidden field i.e. if

OK

is pressed it will be stored the value

Yes

and if

Cancel

is pressed it will be stored the

No

value, so that it can pass the user inputs onto server side code.

Then It will allow the button to do normal PostBack and raise the

OnClick

event.

Question

How could the append be restricted to this?

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Answer 1

Just give the element an ID, and check for the ID the next time

function Confirm() {

    var id = "confirm_value",
        confirm_value = document.getElementById("confirm_value");

    if ( !confirm_value ) {
        confirm_value  = document.createElement("input");
        confirm_value.type = "hidden";
        confirm_value.name = id;
        confirm_value.id   = id;

        document.forms[0].appendChild(confirm_value);
    }

    confirm_value.value = confirm("Are you sure want to delete supplier?") ? "Yes" : "No";
}

How to restrict an append String in JavaScript?

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