twitter bootstrap modal popup, customized size and centralized location.

When I try to make bootstrap modal wider than the default. It is not centralized anymore, here we need to modify the css to adjust the left margin to the right px. Here is a block of handy code to adjust the modal width by a certain percentage of document width and adjust the left margin to centralize the modal as well.

        backdrop: true,
        keyboard: true
       'width': function () { 
           return ($(document).width() * .9) + 'px';  
       'margin-left': function () { 
           return -($(this).width() / 2); 

Render modal dialog from a PartialView, client side validation not working

While I am using JQuery to render a modal popup, and the popup content is read from a controller action with a partialview returned. The client side validation is not fired.

Here is a piece of sample code, I am using bootstrap modal to render the modal popup.

var url = "/Feed/Save/" + id;
        $.get(url, null, function (html) {

You need to add a line to parse unobtrusive validator,


After the modified the code, it all works fine,

var url = "/Feed/Save/" + id;
        $.get(url, null, function (html) {

Create a JQuery plugin for twitter-bootstrap “Confirm Modal popup”

There is a situation that we need user to confirm before they proceed their action. You don’t want to accidently delete very important information. So I come up the idea to extend the bootstrap modal popup to create a confirm modal before calling the function to delete some stuff.

(function ($) {
        //pass the options variable to the function
        confirmModal: function (options) {
            var html = '<div class="modal" id="confirmContainer"><div class="modal-header"><a class="close" data-dismiss="modal">×</a>' +
            '<h3>#Heading#</h3></div><div class="modal-body">' +
            '#Body#</div><div class="modal-footer">' +
            '<a href="#" class="btn btn-primary" id="confirmYesBtn">Confirm</a>' +
            '<a href="#" class="btn" data-dismiss="modal">Close</a></div></div>';

            var defaults = {
                heading: 'Please confirm',
                body:'Body contents',
                callback : null

            var options = $.extend(defaults, options);
            html = html.replace('#Heading#',options.heading).replace('#Body#',options.body);
            var context = $(this);


Basically,  all you need to do in the UI, is to create a link to activate the confirm modal, and a empty div for my plugin to work with. With options, you can pass in modal heading and modal content body. With callback method, is your logic to delete stuff or something you want to do originally.

<script type="text/javascript">
$(function () {
$("#openConfirmModal").click(function () {
heading: 'Confirm to delete',
body: 'Are you sure you want to delete this record?',
callback: function () {
alert('callback test');
<a href="#" id="openConfirmModal">Open Confirm Modal</a>
<div id="confirmDiv"></div>