本文实例为大家分享了js自定义弹出窗口效果展示的具体代码，供大家参考，具体内容如下
效果图：
源码：
1.demo.jsp
2.myLayer.js
方法
*/
function MyLayer(options) {
this.options = options ;
}
/**
* 打开弹窗
*/
MyLayer.prototype.openLayer = function () {
var background_layer = document.createElement("div");
background_layer.style.display = "none";
background_layer.style.position = "absolute";
background_layer.style.top = "0px";
background_layer.style.left = "0px";
background_layer.style.width = "100%";
background_layer.style.height = "100%";
background_layer.style.backgroundColor = "gray";
background_layer.style.zIndex = "1001";
background_layer.style.opacity = "0.8" ;
var open_layer = document.createElement("div");
open_layer.style.display = "none";
open_layer.style.position = "absolute";
open_layer.style.top = this.options.top === undefined ? "10%" : this.options.top;
open_layer.style.left = this.options.left === undefined ? "10%" :this.options.left;
open_layer.style.width = this.options.width === undefined ? "80%" : this.options.width;
open_layer.style.height = this.options.height === undefined ? "80%" : this.options.height;
open_layer.style.border = "1px solid lightblue";
open_layer.style.borderRadius = "15px" ;
open_layer.style.BoxShadow = "4px 4px 10px #171414";
open_layer.style.backgroundColor = "white";
open_layer.style.zIndex = "1002";
open_layer.style.overflow = "auto";
var div_toolBar = document.createElement("div");
div_toolBar.style.textAlign = "right";
div_toolBar.style.paddingTop = "10px" ;
div_toolBar.style.backgroundColor = "aliceblue";
div_toolBar.style.height = "40px";
var span_title = document.createElement("span");
span_title.style.fontSize = "18px";
span_title.style.color = "blue" ;
span_title.style.float = "left";
span_title.style.marginLeft = "20px";
var span_title_content = document.createTextNode(this.options.title === undefined ? "" : this.options.title);
span_title.appendChild(span_title_content);
div_toolBar.appendChild(span_title);
var span_close = document.createElement("span");
span_close.style.fontSize = "16px";
span_close.style.color = "blue" ;
span_close.style.cursor = "pointer";
span_close.style.marginRight = "20px";
span_close.onclick = function () {
open_layer.style.display = "none";
background_layer.style.display = "none";
};
var span_close_content = document.createTextNode("关闭");
span_close.appendChild(span_close_content);
div_toolBar.appendChild(span_close);
open_layer.appendChild(div_toolBar);
var div_content = document.createElement("div");
div_content.style.textAlign = "center";
var content_area = document.createTextNode(this.options.content === undefined ? "" : this.options.content);
div_content.appendChild(content_area);
open_layer.appendChild(div_content);
document.body.appendChild(open_layer);
document.body.appendChild(background_layer);
open_layer.style.display = "block" ;
background_layer.style.display = "block";
};
原文链接：https://www.f2er.com/js/35545.html