分享程序员开发的那些事...
更新时间：2022-10-23 11:12:39
使用这个作为你的doctype
<！DOCTYPE html>
然后将其放在文档的头部
< meta http-equiv =X-UA-Compatiblecontent =IE = edge/>
然后使用 setAttribute 和一个数字的其他功能，这将允许在IE8 +环境中正常工作。
I am trying to create a pop-up message that disables the rest of the screen until you confirm it, only by using CSS and JavaScript (and without the alert function).
Although http://msdn.microsoft.com/en-us/library/ie/ms536739%28v=vs.85%29.aspx declares that setAttribute is supported in IE8 and higher, it does not seem to work correctly - well, actually it doesn't seem to work at all.
Here is my code:
<html>
<style type="text/css">
.overlay
{
position: absolute;
left: 0px;
top: 0px;
width: 100%;
height: 100%;
background-color: rgba(0,0,0,0.2);
}
.overlaytext
{
position: absolute;
left: 50%;
margin-left: -150px;
top: 50%;
margin-top: -50px;
width: 300px;
height: 100px;
padding-top: 5px;
background-color: #777777;
color: #000000;
font-size: 20px;
text-align: center;
}
.overlaybutton
{
position: absolute;
left: 50%;
margin-left: -30px;
top: 50%;
margin-top: 20px;
width: 60px;
height: 25px;
border: solid;
border-color: #000000;
border-width: 1px;
background-color: #999999;
color: #000000;
font-size: 20px;
}
</style>
<script type="text/javascript">
function showoverlay(message)
{
var overlay = document.createElement('div');
overlay.setAttribute('id','overlay');
overlay.setAttribute('class','overlay');
document.body.appendChild(overlay);
var overlaytext = document.createElement('div');
overlaytext.setAttribute('id','overlaytext');
overlaytext.setAttribute('class','overlaytext');
overlaytext.innerHTML = message;
document.body.appendChild(overlaytext);
var overlaybutton = document.createElement('input');
overlaybutton.setAttribute('type','button');
overlaybutton.setAttribute('id','overlaybutton');
overlaybutton.setAttribute('class','overlaybutton');
overlaybutton.setAttribute('value','OK');
overlaybutton.setAttribute('onclick','deleteoverlay()');
document.body.appendChild(overlaybutton);
}
function deleteoverlay()
{
var elem = document.getElementById('overlay');
elem.parentNode.removeChild(elem);
elem = document.getElementById('overlaytext');
elem.parentNode.removeChild(elem);
elem = document.getElementById('overlaybutton');
elem.parentNode.removeChild(elem);
}
</script>
<body>
<input type="button" value="Show message" onclick="showoverlay('Message text')"/>
</body>
</html>
It works just fine in Firefox and Chrome, but IE (testing with IE9) seems to ignore the setAttribute method, because it only puts in the text and the button, but without the formatting (i.e. class was not applied) and also clicking the newly created button does not remove the objects (i.e. either id was not applied, or there is some additional incompatibility with portions of the code that remove the objects).
I tried to replace setAttribute like this:
<script type="text/javascript">
function showoverlay(message)
{
var overlay = document.createElement('div');
overlay.id = 'overlay';
overlay.class = 'overlay';
document.body.appendChild(overlay);
var overlaytext = document.createElement('div');
overlaytext.id = 'overlaytext';
overlaytext.class = 'overlaytext';
overlaytext.innerHTML = message;
document.body.appendChild(overlaytext);
var overlaybutton = document.createElement('input');
overlaybutton.type = 'button';
overlaybutton.id = 'overlaybutton';
overlaybutton.class = 'overlaybutton';
overlaybutton.value = 'OK';
overlaybutton.onclick = 'deleteoverlay()';
document.body.appendChild(overlaybutton);
}
function deleteoverlay()
{
var elem = document.getElementById('overlay');
elem.parentNode.removeChild(elem);
elem = document.getElementById('overlaytext');
elem.parentNode.removeChild(elem);
elem = document.getElementById('overlaybutton');
elem.parentNode.removeChild(elem);
}
</script>
But this time it does not even add the text and the button.
So, how to make this script IE compatible, both showing all the elements and then removing them?
Thanks
Use this as your doctype
<!DOCTYPE html>
and then put this in the head of the document
<meta http-equiv="X-UA-Compatible" content="IE=edge" />
and then enjoy using setAttribute and a number of other features which this will allow to properly work on IE8+ environments.