JavaScript BOM 核心 API 详解：窗口、导航与定时器

window.alert("msg");

window.confirm("msg");

window.prompt("msg","defaulvalue")

window.open()

window.opener.fatherSayHello(); 调用父窗口的方法
window.opener.a

window.close(); 关闭当前
window.opener.close(); 关闭父窗口

var taskid = window.setTimeout(function,ms);
window.setTimeout("alert('hello！')", 5000);

var taskid = window.setInteval(function,ms);

window.clearTimeout(taskid);

window.clearInteval(taskid);

//长*宽
console.log(screen.width + "*" + screen.height)

window.history.back();

window.history.forward();

window.location.reload();//刷新
window.location.href = window.location.href;//刷新

window.history.go(x)

window.location.href = http://www.baidu.com;

console.log(window.navigator.userAgent)

//凡是window的属性和方法，均可以省略“window.”
<script type="application/javascript">
// 警告框
function testAlert(){
var result=window.alert("这是一个警告框")
console.log(result);
}
// confirm 确认框
function testConfirm(){
var result =window.confirm("你确认要离开了吗?");
if(result){
alert("欢迎下次再来!")
}else{
alert("那你在逛逛吧!")
}
consol.log(result);
}
// prompt 询问框
function testPrompt(){
var result = window.prompt("请输入U盾密码","例如:123456");
console.log(result);
}
</script>
<body>
<button onclick="testAlert();">testAlert</button>
<button onclick="testConfirm();">testConfirm</button>
<button onclick="testPrompt();">testPrompt</button>
</body>

//子页面
<script type="application/javascript">
function sayHello(){
alert("hello world")
}
//打开一个窗口
function callFatherMethod(){
window.opener.fatherSayHello();
window.opener.a
}
//关闭本窗口
function testClose(){
window.close();
}
//关闭父窗口
function testFatherClose(){
window.opener.close();
}
</script>
<body>
<button onclick="callFatherMethod()">调用父窗口的方法</button>
<button onclick="testClose()">关闭本窗口</button>
<button onclick="testFatherClose()">关闭父窗口</button>
</body>
//父页面
<script type="application/javascript">
var a = 10;
window.onload = function(){
console.log(window);
console.log("11111111111")
}
//打开一个新窗口
function testOpen(){
var sonwindow = window.open("son.html","aaa","height=300,width=500,top=50,left=50,toolbar=no,menubar=no,scrollbars=no,resizable=no,location=no,status=no")
//子窗口的window对象
console.log(sonwindow);
}
function fatherSayHello(){
alert("hello son!");
}
</script>
<body>
<button onclick="testOpen();">打开一个新窗口</button>
</body>

<script type="application/javascript">
function setTime() {
// window.setTimeout("alert('hello！')",5000);
window.setTimeout(sayHello, 5000);
}
var sayHello = function () {
alert("你好！");
}
</script>
</head>
<body>
<button onclick="sayHello();">调用sayHello</button>
<button onclick="setTime();">调用setTime</button>

<script type="application/javascript">
/*
window.onload = function(){
window.setTimeout(closeSelf, 1000);
}
function closeSelf() {
var secval = document.getElementById("sec").innerHTML;
var secint = parseInt(secval);
document.getElementById("sec").innerHTML = --secint;
if(secint == 0){
window.close();
}
window.setTimeout(closeSelf, 1000);
}
*/

var taskid = 0;
window.onload = function(){
//间隔执行任务,间隔 1000ms 执行一次
taskid = window.setInterval(closeSelf, 1000);
}
function closeSelf() {
//获取 10s 
var secval = document.getElementById("sec").innerHTML;
console.log(secval);
var secint = parseInt(secval);
console.log(secint);
//10s 减减
document.getElementById("sec").innerHTML = --secint;
if(secint == 0){
window.close();
}
}
// 4.清除间隔执行任务 暂停
function stopTask(){
window.clearInterval(taskid);
}
//继续计时
function goonTask(){
taskid = window.setInterval(closeSelf, 1000);
console.log(taskid)
}
</script>
<body>
付款成功，页面将在<span id="sec">10</span>s后关闭。
<button onclick="stopTask()">稍等，待会我会自己关闭</button>
<button onclick="goonTask()">继续读秒，关闭窗口</button>
</body>