离开画面时的JavaScript确认提示
window.onbeforeunload = function (evt) {
var message = 'Are you sure you want to leave?';
if (typeof evt == 'undefined') {
evt = window.event;
}
if (evt) {
evt.returnValue = message;
}
return message;
}
onbeforeunload 事件参考地址
http://msdn.microsoft.com/en-us/library/ms536907(VS.85).aspx
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{
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{
if (x.options[i].selected)
{
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window
window对象是浏览器或者框架自身.top总是浏览器,parent是父框架,self表示自己.
window通常可以省略.
窗口操作: moveBy(dx, dy), moveTo(x, y),
resizeBy(dw, dh), resizeTo(w, h).
导航: window.open(url, frame
name, attribute). attribute可以是left, top, height, width, resizable,
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