本文实例讲述了js实现div弹出层的方法。分享给大家供大家参考。具体分析如下:
话说现在各种插件出来了要实现弹出层真是太简单了,但个人有时觉得那些插件不实用经常会找一些纯js原生态的东西,下面来给各位分享一个原生太js div弹出层实例,有需要的朋友可一起看看。
这个不用多说了,直接贴代码吧.有码有注释:
//以下部分使整个页面至灰不可点击
var procbg = document.createElement("div"); //首先创建一个div
procbg.setAttribute("id","mybg"); //定义该div的id
procbg.style.background = "#000000";
procbg.style.width = "100%";
procbg.style.height = "100%";
procbg.style.position = "fixed";
procbg.style.top = "0";
procbg.style.left = "0";
procbg.style.zIndex = "500";
procbg.style.opacity = "0.6";
procbg.style.filter = "Alpha(opacity=70)";
//背景层加入页面
document.body.appendChild(procbg);
document.body.style.overflow = "hidden"; //取消滚动条
//以下部分实现弹出层的拖拽效果
var posX;
var posY;
mou_head.onmousedown=function(e)
{
if(!e) e = window.event; //IE
posX = e.clientX - parseInt(Idiv.style.left);
posY = e.clientY - parseInt(Idiv.style.top);
document.onmousemove = mousemove;
}
document.onmouseup = function()
{
document.onmousemove = null;
}
function mousemove(ev)
{
if(ev==null) ev = window.event;//IE
Idiv.style.left = (ev.clientX - posX) + "px";
Idiv.style.top = (ev.clientY - posY) + "px";
}
}
function closeDiv() //关闭弹出层
{
var Idiv=document.getElementById("Idiv");
Idiv.style.display="none";
document.body.style.overflow = "auto"; //恢复页面滚动条
var body = document.getElementsByTagName("body");
var mybg = document.getElementById("mybg");
body[0].removeChild(mybg);
}
希望本文所述对大家的javascript程序设计有所帮助。