// constants to define the title of the alert and button text. var ALERT_TITLE = "Oops!"; var ALERT_BUTTON_TEXT = "Ok";// over-ride the alert method only if this a newer browser. // Older browser will see standard alerts if(document.getElementById) { window.alert = function(txt) { createCustomAlert(txt); } }function createCustomAlert(txt) { // shortcut reference to the document object d = document; // if the modalContainer object already exists in the DOM, bail out. if(d.getElementById("modalContainer")) return; // create the modalContainer div as a child of the BODY element mObj = d.getElementsByTagName("body")[0].appendChild(d.createElement("div")); mObj.id = "modalContainer"; // make sure its as tall as it needs to be to overlay all the content on the page mObj.style.height = document.documentElement.scrollHeight + "px"; // create the DIV that will be the alert alertObj = mObj.appendChild(d.createElement("div")); alertObj.id = "alertBox"; // MSIE doesnt treat position:fixed correctly, so this compensates for positioning the alert if(d.all && !window.opera) alertObj.style.top = document.documentElement.scrollTop + "px"; // center the alert box alertObj.style.left = (d.documentElement.scrollWidth - alertObj.offsetWidth)/2 + "px"; // create an H1 element as the title bar h1 = alertObj.appendChild(d.createElement("h1")); h1.appendChild(d.createTextNode(ALERT_TITLE)); // create a paragraph element to contain the txt argument msg = alertObj.appendChild(d.createElement("p")); msg.innerHTML = txt;
// create an anchor element to use as the confirmation button. btn = alertObj.appendChild(d.createElement("a")); btn.id = "closeBtn"; btn.appendChild(d.createTextNode(ALERT_BUTTON_TEXT)); btn.href = "#"; // set up the onclick event to remove the alert when the anchor is clicked btn.onclick = function() { removeCustomAlert();return false; } }// removes the custom alert from the DOM function removeCustomAlert() { document.getElementsByTagName("body")[0].removeChild(document.getElementById("modalContainer")); }
是想知道怎么捕获 “alert” “confirm” “windows internet explorer”
这样类型的弹出窗体
点击OK 或者 取消按钮
http://jqueryui.com/demos/dialog/#modal-confirmation
http://jqueryui.com/demos/dialog/#modal-message
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var ALERT_TITLE = "Oops!";
var ALERT_BUTTON_TEXT = "Ok";// over-ride the alert method only if this a newer browser.
// Older browser will see standard alerts
if(document.getElementById) {
window.alert = function(txt) {
createCustomAlert(txt);
}
}function createCustomAlert(txt) {
// shortcut reference to the document object
d = document; // if the modalContainer object already exists in the DOM, bail out.
if(d.getElementById("modalContainer")) return; // create the modalContainer div as a child of the BODY element
mObj = d.getElementsByTagName("body")[0].appendChild(d.createElement("div"));
mObj.id = "modalContainer";
// make sure its as tall as it needs to be to overlay all the content on the page
mObj.style.height = document.documentElement.scrollHeight + "px"; // create the DIV that will be the alert
alertObj = mObj.appendChild(d.createElement("div"));
alertObj.id = "alertBox";
// MSIE doesnt treat position:fixed correctly, so this compensates for positioning the alert
if(d.all && !window.opera) alertObj.style.top = document.documentElement.scrollTop + "px";
// center the alert box
alertObj.style.left = (d.documentElement.scrollWidth - alertObj.offsetWidth)/2 + "px"; // create an H1 element as the title bar
h1 = alertObj.appendChild(d.createElement("h1"));
h1.appendChild(d.createTextNode(ALERT_TITLE)); // create a paragraph element to contain the txt argument
msg = alertObj.appendChild(d.createElement("p"));
msg.innerHTML = txt;
// create an anchor element to use as the confirmation button.
btn = alertObj.appendChild(d.createElement("a"));
btn.id = "closeBtn";
btn.appendChild(d.createTextNode(ALERT_BUTTON_TEXT));
btn.href = "#";
// set up the onclick event to remove the alert when the anchor is clicked
btn.onclick = function() { removeCustomAlert();return false; }
}// removes the custom alert from the DOM
function removeCustomAlert() {
document.getElementsByTagName("body")[0].removeChild(document.getElementById("modalContainer"));
}