Javascript - window物件

window.onerror=function(msg, url, linenumber){
	var logerror='Error message: ' + msg + '. Url: ' + url + 'Line Number: ' + linenumber;
	alert(logerror);
	return true;
}

window.onload=function(){
	runsomefunction();
}

//只會alert fn2
window.onload=function(){alert('fn1');}
window.onload=function(){alert('fn2');}

//fn1跟fn2都會alert
function winOnLoad1(){alert('fn1');}
function winOnLoad2(){alert('fn2');}
(document.all)?window.attachEvent('onload',winOnLoad):window.addEventListener('load',winOnLoad1);
(document.all)?window.attachEvent('onload',winOnLoad):window.addEventListener('load',winOnLoad2);

window.onscroll=function(){
	var scrollY=window.pageYOffset || document.body.scrollTop;
	document.title=scrollY;
}

window.onbeforeunload=function(e){
	e.returnValue="Any return string here forces a dialog to appear when user leaves this page";
}
window.location="http://www.google.com" //prompt is invoked

<!-- opener.htm(原視窗) -->
<h2>Opener (parent window)</h2>
<div>
	<button id="open_window_btn">開新視窗</button>
	<div id="data"></div>
</div>
<script>
var parentVar = 123;
var popupWindow;

document.getElementById('data').innerHTML = parentVar;

document.getElementById('open_window_btn').onclick = function(){
	popupWindow = window.open("child.htm", "thePopUp", "height=500,width=500");
}

function whenPopUpClosed() {
	window.setTimeout(function() {
		if(popupWindow.closed){
			document.getElementById('data').innerHTML = parentVar;
		}
	}, 10);
}
</script>

<!-- child.htm(新視窗) -->
<h2>Opened Window (child window)</h2>
<div>
	<button id="close_window_btn" onclick="window.close()">關閉視窗</button>
	<div id="data"></div>
</div>
<script>
document.getElementById('data').innerHTML = window.opener.parentVar;

window.onunload = function() {
	var theOpener = window.opener;
	theOpener.parentVar = 456;
	theOpener.whenPopUpClosed();
}
</script>

function fnClick(){
	alert('我被點擊了');
	myP.removeEventListener('click',fnClick,false); //再點第二次就無效了
}
var myP; //宣告為全域變數
window.onload = function(){
	myP = document.getElementsByTagName('p')[0];
	myP.addEventListener('click',fnClick,false);
}

function fnClick1(){alert('我執行了fnClick1');}
function fnClick2(){alert('我執行了fnClick2');}
var myP; //宣告為全域變數
window.onload = function(){
	myP = document.getElementsByTagName('p')[0];
	myP.addEventListener('click',fnClick1);
	myP.addEventListener('click',fnClick2);
}

function dothis(what){alert("Mom says to do " + what);}
if (window.addEventListener){
	window.addEventListener("load", function(){dothis('Your homework');}, false);
	//其實就是把程式寫在function(){}中
}

(d.all)?window.attachEvent('onload',windowOnload1):window.addEventListener('load',windowOnload1,false);
(d.all)?window.attachEvent('onload',windowOnload2):window.addEventListener('load',windowOnload2,false);
function windowOnload1(){
	alert('windowOnload1');
}
function windowOnload2(){
	alert('windowOnload2');
}

function fnClick(){
	alert('我被點擊了');
	myP.detachEvent('onclick',fnClick); //再點第二次就無效了
}
var myP; //宣告為全域變數
window.onload = function(){
	myP = document.getElementsByTagName('p')[0];
	myP.attachEvent('onclick',fnClick);
}

function fnClick1(){alert('我執行了fnClick1');}
function fnClick2(){alert('我執行了fnClick2');}
var myP; //宣告為全域變數
window.onload = function(){
	myP = document.getElementsByTagName('p')[0];
	myP.attachEvent('onclick',fnClick1);
	myP.attachEvent('onclick',fnClick2);
}

(d.all)?window.attachEvent('onload',windowOnload1):window.addEventListener('load',windowOnload1,false);
(d.all)?window.attachEvent('onload',windowOnload2):window.addEventListener('load',windowOnload2,false);
function windowOnload1(){
	alert('windowOnload1');
}
function windowOnload2(){
	alert('windowOnload2');
}

window.onload = function(){
	var sec = 4;
	document.getElementsByTagName('body')[0].innerHTML=5;
	function countdown(){
		document.getElementsByTagName('body')[0].innerHTML = sec;
		sec--;
		if(sec<0){
			clearInterval(intervalID);
			alert("time's up");
		}
	}
	var intervalID = setInterval(countdown, 1000);
}

<script>
window.onload = function(){
	function myFN(){alert('三秒到了');}
	var t = setTimeout(myFN,3000);
	document.getElementById('stopper').onclick = function(){
		clearTimeout(t);
		alert('setTimeout被阻止了！');
	}
}
</script>
<a href="javascript:;" id="stopper">按我阻止setTimeout()！</a>

var yourstate=window.confirm("Are you sure you are ok?");
if (yourstate) //Boolean variable. Sets to true if user pressed "OK" versus "Cancel."
 window.alert("Good!")

<div id="test" onclick="alert('hi')">Sample DIV.</div>

<script type="text/javascript">
//Generate an artificial click event on "test". Fires alert("hi")
var clickevent=document.createEvent("MouseEvents");
clickevent.initEvent("click", true, true)
document.getElementById("test").dispatchEvent(myevent)
</script> 

<head>
<style type="text/css">
#adiv{padding: 10px;}
</style>
</head>

<body>
<div id="adiv">This is some text</div>

<script type="text/javascript">
	var mydiv=document.getElementById("adiv");
	var actualstyle=document.defaultView.getComputedStyle(mydiv, "");
	var divpadding=actualstyle.padding //contains "10px";
</script>
</body>

<script type="text/javascript">
function centeropen(url, winwidth, winheight){
	var centerwin=window.open(url, "", "toolbar=1, resize=1, scrollbars=1, status=1");
	centerwin.resizeTo(winwidth, winheight);
	centerwin.moveTo(screen.width/2-winwidth/2, screen.height/2-winheight/2); //center window on user's screen
}
</script>
<a href="#" onClick="centeropen('about:blank', 800, 650); return false">Open Window</a>

var yourname=window.prompt("please enter your name");
alert(yourname);

window.resizeTo(screen.availWidth, screen.availHeight);

var sec = 100;
function countdown(){
	document.getElementsByTagName('body')[0].innerHTML = sec;
	sec--;
}
window.onload = function(){
	setInterval(countdown, 1000);
}

setInterval(myfunction, 5000) //function reference

var timer=setInterval("document.title='Current Second: ' + new Date().getSeconds()", 1000); //statements should be surrounded in quotes)

setInterval(function(){myfunction(param)}, 5000)

window.onload = function(){
	setTimeout(function(){alert('三秒到了')},3000);
	/*var t = setTimeout(function(){alert('三秒到了')},3000);*/ /*將 setTimeout()指派給t(同樣會執行)*/
}

window.onload = function(){
	function myFN(){alert('三秒到了');}
	setTimeout(myFN,3000);
}

<script>
window.onload = function(){
	function myFN(){alert('三秒到了');}
	var t = setTimeout(myFN,3000);
	document.getElementById('stopper').onclick = function(){
		clearTimeout(t);
		alert('setTimeout被阻止了！');
	}
}
</script>
<a href="javascript:;" id="stopper">按我阻止setTimeout()！</a>