<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>Document</title>
</head>
<body>
<div>
<img src="././../../../数据库/图片//png图片//bilibili.png" alt="">
<input type="button" id="full" value="全屏">
<input type="button" id="noFull" value="退出全屏">
<input type="button" id="isFull" value="是否是全屏">
</div>
<script>
window.onload=function(){
var div=document.querySelector("div");
document.querySelector("#full").onclick=function(){
if(div.webkitRequestFullScreen){
div.webkitRequestFullScreen();
}else if(div.msRequestFullScreen){
div.msRequestFullScreen();
}else if(div.mozRequestFullScreen){
div.mozRequestFullScreen();
}else{
div.requestFullScreen();
}
}
// document.querySelector("#noFull").onclick=function(){
// div.cancelFullScreen();
// }
// document.querySelector("#isFull").onclick=function(){
// div.fullScreenElement();
// }
}
</script>
</body>
</html>
<!--
1.requestFullScreen();开启全屏显示 不同浏览器不同的前缀 firebox :moz IE:ms spera:o
2.cancelFullScreen();关闭全屏显示
3.fullScreenElement();是否是全屏状态
<!-- 网络接口
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>Document</title>
</head>
<body>
<script>
//ononline当网络连接的时候触发
window.addEventListener("online",function(){
alert('有网');
});
//onoffline 无网的时候触发
window.addEventListener("offline",function(){
alert('没网');
});
</script>
</body>
</html>
<!--自定义属性
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>Document</title>
</head>
<body>
<p data-school-name="itcast">王星宇</p>
<script>
window.onload=function(){
var p=document.querySelector('p');
var value=p.dataset["schoolName"];
console.log(value);
}
</script>
</body>
</html>
dete-开头 date-后至少有一个字符,多个单词使用-连接
