How to create a modal popup using javascript and CSS

问题

Actually, two questions:

• How can I create a modal popup with background color of gray?
• Also I need to create for a cover background color only to table itself. Not to overall page.

How do I do this using javascript and css?

回答1:

Here is the HTML, which should probably be inserted with JS, and the styles should be in an external stylesheet.

<div style="background: gray; width: 200px; height: 200px; position: absolute; left: 50%; top: 50%; margin-left: -100px; margin-top: -100px" id="modal">I'm a modal</div>

Then, you could leverage jQuery to display it.

$('a.modal').bind('click', function(event) { 
    event.preventDefault();
    $('#modal').fadeIn(800);
});

This is only a start, you'll want to learn from this and build upon it. For example, the script should check is(':hidden') and show, and if not then fadeOut(800) or similiar.

回答2:

I use this for the mask that sits on top of the screen

.Mask {
   display: none;
   width: 100%;
   height: 100%;
   z-index: 9000;
   padding: 0px;
   margin: 0px;
   background: transparent url(http://i.imgur.com/0KbiL.png);
   position: fixed;
   top: 0px;
   overflow: hidden;
}

来源：https://stackoverflow.com/questions/823281/how-to-create-a-modal-popup-using-javascript-and-css