html 弹出 模态,html模态弹出窗口

bobince..

16

这是一个简单的JavaScript示例:

Basic modal demo

body { margin: 0; }

#shade, #modal { display: none; }

#shade { position: fixed; z-index: 100; top: 0; left: 0; width: 100%; height: 100%; }

#modal { position: fixed; z-index: 101; top: 33%; left: 25%; width: 50%; }

#shade { background: silver; opacity: 0.5; filter: alpha(opacity=50); }

Close

Start

var modal= document.getElementById('modal');

var shade= document.getElementById('shade');

document.getElementById('start').οnclick= function() {

modal.style.display=shade.style.display= 'block';

};

document.getElementById('close').οnclick= function() {

modal.style.display=shade.style.display= 'none';

};

// This code is a workaround for IE6's lack of support for the

// position: fixed style.

//

if (!('maxHeight' in document.body.style)) {

function modalsize() {

var top= document.documentElement.scrollTop;

var winsize= document.documentElement.offsetHeight;

var docsize= document.documentElement.scrollHeight;

shade.style.height= Math.max(winsize, docsize)+'px';

modal.style.top= top+Math.floor(winsize/3)+'px';

};

modal.style.position=shade.style.position= 'absolute';

window.οnscrοll=window.οnresize= modalsize;

modalsize();

}

您可以从那里进行各种改进,例如iframe修复IE z-indexing或将其封装在可重用对象中,但这是它完成的基本方式.