JS实现 页面提交防刷新等待提示

 1 //关闭等待窗口
 2 function closediv() {
 3     //Close Div
 4     document.body.removeChild(document.getElementById("bgDiv"));
 5     document.getElementById("msgDiv").removeChild(document.getElementById("msgTitle"));
 6     document.body.removeChild(document.getElementById("msgDiv"));
 7 }
 8 //显示等待窗口
 9 function showdiv(str) {
10     var msgw, msgh, bordercolor;
11     msgw = 400; //提示窗口的宽度
12     msgh = 100; //提示窗口的高度
13     bordercolor = "#336699"; //提示窗口的边框颜色
14     titlecolor = "#99CCFF"; //提示窗口的标题颜色
15
16     var sWidth, sHeight;
17     sWidth = window.screen.availWidth;
18     sHeight = window.screen.availHeight;
19
20     var bgObj = document.createElement("div");
21     bgObj.setAttribute(‘id‘, ‘bgDiv‘);
22     bgObj.style.position = "absolute";
23     bgObj.style.top = "0";
24     bgObj.style.background = "#777";
25     bgObj.style.filter = "progid:DXImageTransform.Microsoft.Alpha(style=3,opacity=25,finishOpacity=75";
26     bgObj.style.opacity = "0.6";
27     bgObj.style.left = "0";
28     bgObj.style.width = sWidth + "px";
29     bgObj.style.height = sHeight + "px";
30     document.body.appendChild(bgObj);
31     var msgObj = document.createElement("div")
32     msgObj.setAttribute("id", "msgDiv");
33     msgObj.setAttribute("align", "center");
34     msgObj.style.position = "absolute";
35     msgObj.style.background = "white";
36     msgObj.style.font = "12px/1.6em Verdana, Geneva, Arial, Helvetica, sans-serif";
37     msgObj.style.border = "1px solid " + bordercolor;
38     msgObj.style.width = msgw + "px";
39     msgObj.style.height = msgh + "px";
40     msgObj.style.top = (document.documentElement.scrollTop + (sHeight - msgh) / 2) + "px";
41     msgObj.style.left = (sWidth - msgw) / 2 + "px";
42     var title = document.createElement("h4");
43     title.setAttribute("id", "msgTitle");
44     title.setAttribute("align", "right");
45     title.style.margin = "0";
46     title.style.padding = "3px";
47     title.style.background = bordercolor;
48     title.style.filter = "progid:DXImageTransform.Microsoft.Alpha(startX=20, startY=20, finishX=100, finishY=100,style=1,opacity=75,finishOpacity=100);";
49     title.style.opacity = "0.75";
50     title.style.border = "1px solid " + bordercolor;
51     title.style.height = "18px";
52     title.style.font = "12px Verdana, Geneva, Arial, Helvetica, sans-serif";
53     title.style.color = "white";
54     //title.style.cursor = "pointer";
55     //title.innerHTML = "关闭";
56     //title.onclick = closediv;
57     document.body.appendChild(msgObj);
58     document.getElementById("msgDiv").appendChild(title);
59     var txt = document.createElement("p");
60     txt.style.margin = "1em 0"
61     txt.setAttribute("id", "msgTxt");
62     txt.innerHTML = str;
63     document.getElementById("msgDiv").appendChild(txt);
64 }
65 //屏蔽F5
66 document.onkeydown = mykeydown;
67 function mykeydown() {
68     if (event.keyCode == 116) //屏蔽F5刷新键
69     {
70         window.event.keyCode = 0;
71         return false;
72     }
73 }  

使用页面直接调用这个js文件，然后在按钮的onclick事件中填写：

<INPUT onclick="showdiv(‘表达数据提交中<br/>请稍候........ <br/> );"  type="button"  value="提交数据">

调用closediv()关闭