var aInput = document.getElementsByTagName("input");
2 aInput[0].onclick = function() {
3 var d1 = new Dialog();
4 d1.init({ //配置参数
5 iNum : 0, //在每个配置参数中设置一个唯一的标识
6 title : "登录"
7 });
8 }
9 aInput[1].onclick = function() {
10 var d2 = new Dialog();
11 d2.init({ //配置参数
12 iNum : 1,
13 w : 300,
14 h : 500,
15 dir : "right",
16 title : "公告"
17 });
18 }
19 aInput[2].onclick = function() {
20 var d3 = new Dialog();
21 d3.init({ //配置参数
22 iNum : 2,
23 w : 300,
24 h : 500,
25 dir : "left",
26 title : "注意",
27 mask : true
28 });
29 }
30 function Dialog() {
31 this.dialog = null;
32 this.oMask = null;
33 this.settings = { //默认参数
34 w : 300,
35 h : 300,
36 dir : "center",
37 mask : false
38 }
39 }
40 Dialog.prototype.json = {};//加一个全局的json解决弹窗不断触发的问题
41 Dialog.prototype.init = function( opts ) {
42 extend(this.settings,opts);
43 if(this.json[opts.iNum] == undefined) { //根据json对象访问配置参数中的对象是否唯一标识设置开关
44 this.json[opts.iNum] = true; //利用开关原理解决弹窗不断触发的问题
45 }
46 if(this.json[opts.iNum]){
47 this.FnCreate();//创建Dialog
48 this.setData();//设置数据
49 this.FnClose();//关闭弹窗
50 if(this.settings.mask){
51 this.FnMask();//创建遮燥
52 }
53 this.json[opts.iNum] = false;
54 }
55
56 }
57 Dialog.prototype.FnCreate = function() {
58 this.dialog = document.createElement("div");
59 this.dialog.className = "dialog";
60 this.dialog.innerHTML = '<div class="diaTop"> \
61 <span class="title">'+this.settings.title+'</span> \
62 <span class="close">X</span> \
63 </div> ';
64 document.body.appendChild( this.dialog );
65 }
66 Dialog.prototype.setData = function() {
67 this.dialog.style.width = this.settings.w + "px";
68 this.dialog.style.height = this.settings.h + "px";
69 if(this.settings.dir == "center") {
70 this.dialog.style.left = (viewWidth() - this.dialog.offsetWidth)/2 + "px";
71 this.dialog.style.top = (viewHeight() - this.dialog.offsetHeight)/2 + "px";
72 }else if(this.settings.dir = "right") {
73 this.dialog.style.left = viewWidth() - this.dialog.offsetWidth + "px";
74 this.dialog.style.top = viewHeight() - this.dialog.offsetHeight + "px";
75 }else if(this.settings.dir == "left") {
76 this.dialog.style.left = 0;
77 this.dialog.style.top = viewHeight() - this.dialog.offsetHeight + "px";
78 }
79 }
80 Dialog.prototype.FnClose = function() {
81 var close = this.dialog.getElementsByTagName("span")[1];
82 var This = this;
83 close.onclick = function() {
84 document.body.removeChild(This.dialog);
85 if(This.settings.mask) {
86 document.body.removeChild(This.oMask);
87 }
88 This.json[This.settings.iNum] = true; //关闭时开关还原
89 }
90 }
91 Dialog.prototype.FnMask = function() {
92 this.oMask = document.createElement("div");
93 this.oMask.id = "mask";
94 document.body.appendChild(this.oMask);
95 this.oMask.style.width = viewWidth() + "px";
96 this.oMask.style.height = viewHeight() + "px";
97 }
98 function extend(obj1,obj2) {
99 for(var attr in obj2) {
100 obj1[attr] = obj2[attr];
101 }
102 }
103 function viewWidth(){
104 return document.documentElement.clientWidth;
105 }
106 function viewHeight(){
107 return document.documentElement.clientHeight;
108 }
1 <!doctype html>
2 <html lang="en">
3 <head>
4 <meta charset="UTF-8">
5 <title>Document</title>
6 <style>
7 *{margin:0;padding:0;}
8 .dialog{position:absolute;border: solid 1px #000;z-index: 2;}
9 .dialog .diaTop{width:100%;height:25px;background:black;color:white;}
10 .dialog .diaTop .title{margin-left: 100px;}
11 .dialog .diaTop .close{float:right;margin-right:10px;}
12 #mask{background: #000; filter:alpha(opacity=50);opacity: .5;z-index: 1;}
13 </style>
14 </head>
15 <body>
16 <input type="button" value="btn1">
17 <input type="button" value="btn2">
18 <input type="button" value="btn3">
19 <!-- <div class="dialog">
20 <div class="diaTop">
21 <span class="title">title</span>
22 <span class="close">X</span>
23 </div>
24 </div> -->
25 <!-- <div id="mask"></div> -->
26 </body>
27 <script>
28
29 </script>
30 </html>
