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基于jquery的模态div层弹出效果

来源: 易采站长站

经过几多周折,终于搞出来了,效果图如下:

具体实现:
(1) 编写 jquery.divbox.js 的代码:
代码如下:
jQuery.fn.extend(
{
OpenDiv: function()
{
var sWidth, sHeight;
sWidth = window.screen.availWidth;
if (window.screen.availHeight > document.body.scrollHeight)
{
sHeight = window.screen.availHeight;
} else
{
sHeight = document.body.scrollHeight + 20;
}
var maskObj = document.createElement(“div”);
maskObj.setAttribute(‘id’, ‘BigDiv’);
maskObj.style.position = “absolute”;
maskObj.style.top = “0”;
maskObj.style.left = “0”;
maskObj.style.background = “#111”;
maskObj.style.filter = “Alpha(opacity=70);”;
maskObj.style.opacity = “0.7”;
maskObj.style.width = sWidth + “px”;
maskObj.style.height = sHeight + “px”;
maskObj.style.zIndex = “10000”;
$(“body”).attr(“scroll”, “no”);
document.body.appendChild(maskObj);
$(“#BigDiv”).data(“divbox_selectlist”, $(“select:visible”));
$(“select:visible”).hide();
$(“#BigDiv”).attr(“divbox_scrolltop”, $.ScrollPosition().Top);
$(“#BigDiv”).attr(“divbox_scrollleft”, $.ScrollPosition().Left);
$(“#BigDiv”).attr(“htmloverflow”, $(“html”).css(“overflow”));
$(“html”).css(“overflow”, “hidden”);
window.scrollTo($(“#BigDiv”).attr(“divbox_scrollleft”), $(“#BigDiv”).attr(“divbox_scrolltop”));
var MyDiv_w = this.width();
var MyDiv_h = this.height();
MyDiv_w = parseInt(MyDiv_w);
MyDiv_h = parseInt(MyDiv_h);
var width = $.PageSize().Width;
var height = $.PageSize().Height;
var left = $.ScrollPosition().Left;
var top = $.ScrollPosition().Top;
var Div_topposition = top + (height / 2) – (MyDiv_h / 2);
var Div_leftposition = left + (width / 2) – (MyDiv_w / 2);
this.css(“position”, “absolute”);
this.css(“z-index”, “10001”);
this.css(“background”, “#fff”);
this.css(“left”, Div_leftposition + “px”);
this.css(“top”, Div_topposition + “px”);
if ($.browser.mozilla)
{
this.show();
return;
}
this.fadeIn(“fast”);
}
, CloseDiv: function()
{
if ($.browser.mozilla)
{
this.hide();
} else
{
this.fadeOut(“fast”);
} $(“html”).css(“overflow”, $(“#BigDiv”).attr(“htmloverflow”));
window.scrollTo($(“#BigDiv”).attr(“divbox_scrollleft”), $(“#BigDiv”).attr(“divbox_scrolltop”));

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