mylink (the button's this) isn't a string, so you try to open mylink.href:

if (typeof(mylink) == 'string')
  href = mylink;
else 
  href = mylink.href;

But buttons don't have href properties, so it's as if you wrote:

window.open(undefined, 'about', 'width=400,height=200,scrollbars=yes');

which opens a blank page, as expected. If you want to open the same page as the link, use:

onclick="popup('newpopup.html', 'about');"
Answer from Paul Roub on Stack Overflow
🌐
Stack Overflow
stackoverflow.com › questions › 32147463 › pop-up-a-window-when-the-user-clicks-a-button
pop-up a window when the user clicks a button
Top answer
1 of 4
3

mylink (the button's this) isn't a string, so you try to open mylink.href:

if (typeof(mylink) == 'string')
  href = mylink;
else 
  href = mylink.href;

But buttons don't have href properties, so it's as if you wrote:

window.open(undefined, 'about', 'width=400,height=200,scrollbars=yes');

which opens a blank page, as expected. If you want to open the same page as the link, use:

onclick="popup('newpopup.html', 'about');"
2 of 4
1

Try this simple piece of code:

<script>
   function fullwindowpopup(){
      window.open("newpopup.html","bfs","fullscreen,scrollbars")
   }
</script>

<center>
    <form>
        <input type="button" onClick="fullwindowpopup()" value="CLICK HERE">
    </form>
</center>
🌐
Stack Overflow
stackoverflow.com › questions › 24017306 › jquery-open-popup-on-button-click-for-bootstrap
Jquery open popup on button click for bootstrap
Top answer
1 of 3
24

Give an ID to uniquely identify the button, lets say myBtn

// when DOM is ready
$(document).ready(function () {

     // Attach Button click event listener 
    $("#myBtn").click(function(){

         // show Modal
         $('#myModal').modal('show');
    });
});

JSFIDDLE

2 of 3
2

Below mentioned link gives the clear explanation with example.

http://www.aspsnippets.com/Articles/Open-Show-jQuery-UI-Dialog-Modal-Popup-on-Button-Click.aspx

Code from the same link

<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.7.2/jquery.min.js"></script>
<script src="http://ajax.aspnetcdn.com/ajax/jquery.ui/1.8.9/jquery-ui.js" type="text/javascript"></script>
<link href="http://ajax.aspnetcdn.com/ajax/jquery.ui/1.8.9/themes/blitzer/jquery-ui.css"
    rel="stylesheet" type="text/css" />
<script type="text/javascript">
    $(function () {
        $("#dialog").dialog({
            modal: true,
            autoOpen: false,
            title: "jQuery Dialog",
            width: 300,
            height: 150
        });
        $("#btnShow").click(function () {
            $('#dialog').dialog('open');
        });
    });
</script>
<input type="button" id="btnShow" value="Show Popup" />
<div id="dialog" style="display: none" align = "center">
    This is a jQuery Dialog.
</div>
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🌐
C# Corner
c-sharpcorner.com › blogs › open-popup-on-button-click-using-jquery1
Open PopUp on Button Click Using JQUERY
September 30, 2014 - This blog give the information like how generate popup window on button click using the jquery.
🌐
WpPopupMaker
wppopupmaker.com › docs › triggering-popups › trigger-click-open-use-jquery-to-trigger-a-popup-on-click
Use Inline JavaScript And JQuery To Trigger A Popup With A Click - Popup Maker
March 25, 2025 - // The parameter '123' in the .open() method refers to a generic popup ID number. // Substitute the actual ID number generated for your popup. <script type="type/javascript">jQuery('#my-button').on('click', function () { PUM.open(123); }); </script>
🌐
GeeksforGeeks
geeksforgeeks.org › javascript › how-to-open-a-popup-on-click-using-javascript
How to Open a Popup on Click using JavaScript ? - GeeksforGeeks
August 5, 2025 - In this approach, we will use the classList property with toggle() method in JavaScript to toggle the visibility of the overlay and popup dialog elements. The openFn() function dynamically adds or removes the 'hidden' class, while adjusting ...
🌐
C# Corner
c-sharpcorner.com › blogs › javascriptopen-new-popup-window-on-button-click-event1
Javascript-Open new Popup Window on button click event
April 29, 2020 - window.open(MyPath,"","toolbar=no,status=no,menubar=no,location=center,scrollbars=no,resizable=no,height=500,width=657");
🌐
YouTube
youtube.com › watch
Show jQuery UI Modal Popup Window on Button Click with Example - YouTube
08:54
Here I will explain show simple jQuery ui modal popup window on button click with example or creating modal popup window using jQuery ui plugin modal popup f...
Published   March 11, 2015
Views   73K
🌐
Pair Networks
pair.com › home › using jquery to generate modal pop-up when clicked
jQuery Modal Popup | jQuery Modal Example | jQuery Popup
May 21, 2025 - This second statement removes the “active” class when the “Close” button is clicked. $(".close, .popup").on("click", function(){ $(".popup, .popup-content").removeClass("active"); }); When this happens, the “active” class is removed from the pop-up classes, causing them to revert to their previous styling that has the visibility set to hidden. Add both statements of jQuery to your document. If all this is completed correctly, you will have a rudimentary modal pop-up box. jQuery is an open-source software permissive under an MIT license.
Find elsewhere
🌐
Stack Overflow
stackoverflow.com › questions › 30869889 › how-can-i-open-a-popup-window-using-jquery
html - How can I open a popup window using JQuery? - Stack Overflow
Top answer
1 of 4
8

Here is a solution. Yo can try

 $(document).ready(function () {
            $("#OpenDialog").click(function () {
                //$("#dialog").dialog({modal: true, height: 590, width: 1005 });
                var w = window.open("", "popupWindow", "width=600, height=400, scrollbars=yes");
                var $w = $(w.document.body);
                $w.html("<textarea></textarea>");
            });
        });

Here is the edited jsfiddle https://jsfiddle.net/bac8qdq1/13/

2 of 4
4

I have update the fiddle for you, please take a look. It is working

https://jsfiddle.net/bac8qdq1/12/

$(document).ready(function () {
    $("#dialog").dialog({ autoOpen: false, modal: true, height: 590, width: 1005 });

            $("#OpenDialog").click(function () {
                $("#dialog").dialog('open');
            });
        });
🌐
John Kavanagh
johnkavanagh.co.uk › home › articles › a simple popup window using jquery
A Simple Popup Window Using jQuery, by John Kavanagh
May 28, 2025 - Making a popup window with jQuery ... is clicked upon: $('#link').click(function (e) { e.preventDefault(); var url = $(this).attr('href'); window.open(url, 'popup', 'width=600,height=600'); return false;});...
🌐
W3Schools
w3schools.com › howto › howto_js_popup.asp
How To Create Popups
Learn how to create popups with CSS and JavaScript. Click me to toggle the popup!
🌐
GeeksforGeeks
geeksforgeeks.org › how-to-generate-a-simple-popup-using-jquery
How to generate a simple popup using jQuery ? | GeeksforGeeks
September 24, 2024 - Example: In this example we creates a jQuery UI dialog popup that remains hidden by default. It opens when the "Show Popup" button is clicked, using the dialog() method to display the popup content.
🌐
ASPSnippets
aspsnippets.com › Articles › Open-Show-jQuery-UI-Dialog-Modal-Popup-on-Button-Click.aspx
Open Show jQuery UI Dialog Modal Popup on Button Click
August 26, 2015 - explained with an example, how to Open (Show) jQuery UI Dialog Modal Popup box on Button Click. The jQuery UI Dialog Modal Popup box will be shown (opened) on Button Click using the jQuery Dialog “open” command.
🌐
Stack Overflow
stackoverflow.com › questions › 30644342 › display-a-modal-on-button-click-using-jquery
Display a Modal on button click using Jquery
Top answer
1 of 4
11

show openModal div on button1 click.

$('#button1').on('click', function() {
    $('#openModal').show();
});

No need of onclick="myFunction()" on button

2 of 4
3

Let's try...

Simple popup model created by using jquery, HTML, and CSS.

$(function() {
    // Open Popup
    $('[popup-open]').on('click', function() {
        var popup_name = $(this).attr('popup-open');
 $('[popup-name="' + popup_name + '"]').fadeIn(300);
    });
 
    // Close Popup
    $('[popup-close]').on('click', function() {
 var popup_name = $(this).attr('popup-close');
 $('[popup-name="' + popup_name + '"]').fadeOut(300);
    });
 
    // Close Popup When Click Outside
    $('.popup').on('click', function() {
 var popup_name = $(this).find('[popup-close]').attr('popup-close');
 $('[popup-name="' + popup_name + '"]').fadeOut(300);
    }).children().click(function() {
 return false;
    });
 
});
body {
    font-family:Arial, Helvetica, sans-serif;
}
 
p {
    font-size: 16px;
    line-height: 26px;
    letter-spacing: 0.5px;
    color: #484848;
}
 
/* Popup Open button */ 
.open-button{
    color:#FFF;
    background:#0066CC;
    padding:10px;
    text-decoration:none;
    border:1px solid #0157ad;
    border-radius:3px;
}
 
.open-button:hover{
    background:#01478e;
}
 
.popup {
    position:fixed;
    top:0px;
    left:0px;
    background:rgba(0,0,0,0.75);
    width:100%;
    height:100%;
    display:none;
}
 
/* Popup inner div */
.popup-content {
    width: 500px;
    margin: 0 auto;
    box-sizing: border-box;
    padding: 40px;
    margin-top: 20px;
    box-shadow: 0px 2px 6px rgba(0,0,0,1);
    border-radius: 3px;
    background: #fff;
    position: relative;
}
 
/* Popup close button */
.close-button {
    width: 25px;
    height: 25px;
    position: absolute;
    top: -10px;
    right: -10px;
    border-radius: 20px;
    background: rgba(0,0,0,0.8);
    font-size: 20px;
    text-align: center;
    color: #fff;
    text-decoration:none;
}
 
.close-button:hover {
    background: rgba(0,0,0,1);
}
 
@media screen and (max-width: 720px) {
.popup-content {
    width:90%;
    } 
}
<!DOCTYPE html>
<html>
<head>
 <title> Popup </title>
 <script src="http://ajax.googleapis.com/ajax/libs/jquery/1.11.2/jquery.min.js"></script>
</head> 

<body>
    <a class="open-button" popup-open="popup-1" href="javascript:void(0)"> Popup 
        Preview</a>
         
        <div class="popup" popup-name="popup-1">
            <div class="popup-content">
            <h2>Model </h2>
        <p>Model content will be here. Lorem ipsum dolor sit amet, 
        consectetur adipiscing elit. Aliquam consequat diam ut tortor 
        dignissim, vel accumsan libero venenatis. Nunc pretium volutpat 
        convallis. Integer at metus eget neque hendrerit vestibulum. 
        Aenean vel mattis purus. Fusce condimentum auctor tellus eget 
        ullamcorper. Vestibulum sagittis pharetra tellus mollis vestibulum. 
        Lorem ipsum dolor sit amet, consectetur adipiscing elit.</p>
        <a class="close-button" popup-close="popup-1" href="javascript:void(0)">x</a>
            </div>
        </div>  
</body>
</html>

🌐
Stack Overflow
stackoverflow.com › questions › 65134637 › how-to-make-a-pop-up-appear-when-you-click-a-button-in-html
popup - How to make a pop up appear when you click a button in html - Stack Overflow
Top answer
1 of 1
1

JavaScript code should be wrapped with the <script> tag. CSS code should be wrapped with the <style> tag inside the <head> tag (although not mandatory).

The HTML you should be using is this:

<html>
<head>
<style>
.center {
    margin: auto;
    width: 60%;
    padding: 20px;
    box-shadow: 0 4px 8px 0 rgba(0, 0, 0, 0.2), 0 6px 20px 0 rgba(0, 0, 0, 0.19);
}

.hideform {
    display: none;
}
</style>
</head>
<body>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div class="center hideform">
    <button id="close" style="float: right;">X</button>
    <form action="/action_page.php">
        First name:<br>
        <input type="text" name="firstname" value="Mickey">
        <br>
        Last name:<br>
        <input type="text" name="lastname" value="Mouse">
        <br><br>
        <input type="submit" value="Submit">
    </form>
</div>
<button id="show">Show form</button>
<script>
$('#show').on('click', function () {
    $('.center').show();
    $(this).hide();
})

$('#close').on('click', function () {
    $('.center').hide();
    $('#show').show();
})
</script>
</body>
</html>

🌐
Aspdotnet-suresh
aspdotnet-suresh.com › 2014 › 05 › jquery-display-popup-window-on-button-click-in-asp-net.html
jQuery - How to Display Popup Window on Button Click in Asp.net
Here I will explain how to display popup window on button click in asp.net using jQuery ui modal popup window or open jQuery modal popup window on button click in asp.net.
🌐
Tutorialdeep
tutorialdeep.com › knowhow › jquery faqs › open bootstrap modal popup on button click using jquery
Open Bootstrap Modal Popup on Button Click Using jQuery
June 5, 2021 - To open Bootstrap modal on button click, you have to use the jQuery modal('show'). You can can also display Bootstrap modal when someone
🌐
Stack Overflow
stackoverflow.com › questions › 31436694 › jquery-ui-modal-popup-window-on-button-click
jQuery UI Modal Popup Window on Button Click
Top answer
1 of 1
1

Jquery library references should be in below order. 

 <script type="text/javascript" src="http://code.jquery.com/jquery-1.8.2.js"></script>
 <script type="text/javascript" src="http://code.jquery.com/ui/1.10.3/jquery-ui.js"></script>
🌐
JavaScript.info
javascript.info › tutorial › frames and windows
Popups and window methods
For the details, see chapter Cross-window communication. A popup may access the “opener” window as well using window.opener reference.