Div 作为模态 - javascript
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Div as modal - javascript
提问by ihorko
I need a JavaScript that shows hidden div on the center of the screen as modal with darked background like jquery dialog!
我需要一个 JavaScript，它在屏幕中央显示隐藏的 div 作为模态与深色背景，如 jquery 对话框！
example:
例子：
<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>
Who can help? Thanks
谁能帮忙？谢谢
回答by mirmdasif
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:
一个简单的模态弹出 div 或对话框可以通过 CSS 属性和一点点 jQuery 来完成。基本思想很简单：
So we need three divs:
所以我们需要三个div：
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;
}
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");
});
});
And finally the 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>
I have used jquery-1.4.1.min.js www.jquery.com/download and tested the code in Firefox. Hope this helps.
首先让我们定义 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;
}
将隐藏器 div 的 z-index 设置为低于 pop_up 框很重要，因为我们希望在顶部显示 popup_box。
这是java脚本：
$(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。希望这可以帮助。
回答by rcravens
Here is a jfiddle example of a modal overlay using jQuery.
这是使用 jQuery 的模态叠加的 jfiddle 示例。
Hope this gets you started.
希望这能让你开始。
Bob
鲍勃
