重寫confirm()

function confirm(message, callback){

var create = function(){

return document.createElement.apply(document, arguments);

}

var dialog = create("div"),

messageBox = create("p"),

okBubbton = create("button"),

cancelButton = create("button");

dialog.style.cssText = "position: absolute; top: 200px; left: 600px; width: 200px; height: 150px; border: 1px solid gray;";

messageBox.innerHTML = message;

okBubbton.innerHTML = "OK";

cancelButton.innerHTML = "Cancel";

okBubbton.onclick = function(){

callback(true);

dialog.parentNode.removeChild(dialog);

}

cancelButton.onclick = function(){

callback(false);

dialog.parentNode.removeChild(dialog);

}

dialog.appendChild(messageBox);

dialog.appendChild(okBubbton);

dialog.appendChild(cancelButton);

document.body.appendChild(dialog);

}

function confirmListener(result){

alert(result);

}

confirm("confirm test", confirmListener);