Div 作为模态 - javascript [英] Div as modal - javascript

问题描述

我需要一个 JavaScript 将隐藏的 div 显示在屏幕中央，作为带有深色背景的模态，如 jquery 对话框！

I need a JavaScript that shows hidden div on the center of the screen as modal with darked background like jquery dialog!

示例:

<div id='divToShow' style='display:none'>

Here is the content of the div that should be shown as modal on the center of the page!

</div>

谁能帮忙?谢谢

推荐答案

一个简单的模态弹出div或者对话框可以通过CSS属性和一点点jQuery来完成.基本思路很简单:

1.创建一个半透明背景的div &单击时将其显示在您的内容页面顶部.

2. 在半透明调光/隐藏 div 的顶部显示您的弹出 div 或警报 div.

A simple modal pop up div or dialog box can be done by CSS properties and little bit of jQuery.The basic idea is simple:

1. Create a div with semi transparent background & show it on top of your content page on click.

2. Show your pop up div or alert div on top of the semi transparent dimming/hiding div.

所以我们需要三个 div:

内容(网站的主要内容).

hider(使内容变暗).

popup_box(要显示的模态 div).

So we need three divs:

content(main content of the site).

hider(To dim the content).

popup_box(the modal div to display).

首先让我们定义 CSS:

First let us define the CSS:

    #hider
    {
        position:absolute;
        top: 0%;
        left: 0%;
        width:1600px;
        height:2000px;
        margin-top: -800px; /*set to a negative number 1/2 of your height*/
        margin-left: -500px; /*set to a negative number 1/2 of your width*/
        /*
        z- index must be lower than pop up box
       */
        z-index: 99;
       background-color:Black;
       //for transparency
       opacity:0.6;
    }

    #popup_box  
    {

    position:absolute;
        top: 50%;
        left: 50%;
        width:10em;
        height:10em;
        margin-top: -5em; /*set to a negative number 1/2 of your height*/
        margin-left: -5em; /*set to a negative number 1/2 of your width*/
        border: 1px solid #ccc;
        border:  2px solid black;
        z-index:100; 

    }

重要的是我们将隐藏 div 的 z-index 设置为低于 pop_up 框，因为我们希望在顶部显示 popup_box.
java脚本来了:

It is important that we set our hider div's z-index lower than pop_up box as we want to show popup_box on top.
Here comes the java Script:

        $(document).ready(function () {
        //hide hider and popup_box
        $("#hider").hide();
        $("#popup_box").hide();

        //on click show the hider div and the message
        $("#showpopup").click(function () {
            $("#hider").fadeIn("slow");
            $('#popup_box').fadeIn("slow");
        });
        //on click hide the message and the
        $("#buttonClose").click(function () {

            $("#hider").fadeOut("slow");
            $('#popup_box').fadeOut("slow");
        });

        });

最后是 HTML:

<div id="hider"></div>
<div id="popup_box">
    Message<br />
    <a id="buttonClose">Close</a>
</div>    
<div id="content">
    Page's main content.<br />
    <a id="showpopup">ClickMe</a>
</div>

我使用了 jquery-1.4.1.min.js www.jquery.com/download 并在 Firefox 中测试了代码.希望这会有所帮助.

I have used jquery-1.4.1.min.js www.jquery.com/download and tested the code in Firefox. Hope this helps.

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