[CSS] 客製作 Window Alert 樣式

HTML

<!-- partial:index.partial.html -->
<input type="button" value = "Test the alert" onclick="alert('Alert this pages');" />
<!-- partial -->

CSS

#modalContainer {
 background-color:rgba(0, 0, 0, 0.3);
 position:absolute;
  top:0;
 width:100%;
 height:100%;
 left:0px;
 z-index:10000;
 background-image:url(tp.png); /* required by MSIE to prevent actions on lower z-index elements */
}
 
#alertBox {
 position:relative;
 width:33%;
 min-height:100px;
  max-height:400px;
 margin-top:50px;
 border:1px solid #fff;
 background-color:#fff;
 background-repeat:no-repeat;
  top:30%;
}
 
#modalContainer > #alertBox {
 position:fixed;
}
 
#alertBox h1 {
 margin:0;
 font:bold 1em Raleway,arial;
 background-color:#f97352;
 color:#FFF;
 border-bottom:1px solid #f97352;
 padding:10px 0 10px 5px;
}
 
#alertBox p {
 height:50px;
 padding-left:5px;
  padding-top:30px;
  text-align:center;
  vertical-align:middle;
}
 
#alertBox #closeBtn {
 display:block;
 position:relative;
 margin:10px auto 10px auto;
 padding:7px;
 border:0 none;
 width:70px;
 text-transform:uppercase;
 text-align:center;
 color:#FFF;
 background-color:#f97352;
 border-radius: 0px;
 text-decoration:none;
  outline:0!important;
}
 
@media (max-width: 600px) 
{
  #alertBox {
 position:relative;
 width:90%;
  top:30%;
}

JS

var ALERT_TITLE = "Oops!";
var ALERT_BUTTON_TEXT = "Ok";
 
if(document.getElementById) {
 window.alert = function(txt) {
  createCustomAlert(txt);
 }
}
 
function createCustomAlert(txt) {
 d = document;
 
 if(d.getElementById("modalContainer")) return;
 
 mObj = d.getElementsByTagName("body")[0].appendChild(d.createElement("div"));
 mObj.id = "modalContainer";
 mObj.style.height = d.documentElement.scrollHeight + "px";
 
 alertObj = mObj.appendChild(d.createElement("div"));
 alertObj.id = "alertBox";
 if(d.all && !window.opera) alertObj.style.top = document.documentElement.scrollTop + "px";
 alertObj.style.left = (d.documentElement.scrollWidth - alertObj.offsetWidth)/2 + "px";
 alertObj.style.visiblity="visible";
 
 h1 = alertObj.appendChild(d.createElement("h1"));
 h1.appendChild(d.createTextNode(ALERT_TITLE));
 
 msg = alertObj.appendChild(d.createElement("p"));
 //msg.appendChild(d.createTextNode(txt));
 msg.innerHTML = txt;
 
 btn = alertObj.appendChild(d.createElement("a"));
 btn.id = "closeBtn";
 btn.appendChild(d.createTextNode(ALERT_BUTTON_TEXT));
 btn.href = "#";
 btn.focus();
 btn.onclick = function() { removeCustomAlert();return false; }
 
 alertObj.style.display = "block";
 
}
 
function removeCustomAlert() {
 document.getElementsByTagName("body")[0].removeChild(document.getElementById("modalContainer"));
}
function ful(){
alert('Alert this pages');
}

Demo