目录
//根据id名称获取元素对象
var test = document.getElementsById("test");
//获取元素内容
var result = test.innerHTML;
//查找所有的段落元素<p>并获取第一个段落标签内部的文本内容
var p = document.getElementByTagName("p");
var result = p[0].innerHTML;
document.getElementsByByClassName("类名"）；
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>创建动态的HTML内容</title>
</head>
<body>
<h3>JavaScript DOM动态创建内容</h3>
<script>
var date = new Date();
document.write("本段文字为动态生成。"+date.toLocaleString());
</script>
</body>
</html>
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>修改元素内容</title>
</head>
<body>
<h3>修改元素内容</h3>
<p id="test">World</p>
<script>
var p = document.getElementById("test");
var msg = p.innerHTML;
p.innerHTML = "<strong>Hello</strong>";
alert("段落元素的初始内容是：\n"+msg);
</script>
</body>
</html>
var img = document.getElementById("image");
img.src = "image/1.jpg";
var p = document.getElementById("test");
p.style.backgroundColor = "blue";
| onabort | 图像加载过程被中断 |
| onblur | 元素失去焦点 |
| onchange | 域的内容被改变 |
| onclick | 元素被鼠标左键单击 |
| ondbclick | 元素被鼠标左键双击 |
| onerror | 加载文档或图像时发送错误 |
| onfocus | 元素获得焦点 |
| onkeydown |
键盘按键被按下 |
| onkeypress | 键盘按键被按下并松开 |
| onkeyup | 键盘按键被松开 |
| onload | 页面或图像加载完成 |
| onmousedown | 鼠标按键被按下 |
| onmousemove | 鼠标被移动 |
| onmouseout | 鼠标从当前元素上移走 |
| onmouseover | 鼠标移动到当前元素上 |
| onmouseup | 鼠标按键被松开 |
| onreset | 重置按钮被单击 |
| onresize | 窗口或框架的大小被更改 |
| onselect |
文本被选中 |
| onsubmit | 提交按钮被单击 |
| onunload | 退出页面 |
//创建新的元素
var box = document.createElement("div");
//设置新元素的背景颜色为黄色
box.style.backgroundColor="yellow";
//设置新元素的内容
box.innerHTML="这是动态添加的div元素。"；
//将新创建的元素添加id="container"的段落元素中
p.appendChild(box);
//获取父元素
var test = document.getElementById("test");
//获取子元素
var p = document.getElementById("p01");
//删除子元素
test.removeChild(p);
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8"/>
<title>Window对象</title>
</head>
<body>
<h3>Window对象</h3>
<script>
var width = window.innerWidth;
var height = window.innerHeight;
document.write("浏览器当前可用宽度为："+width+"<br>浏览器可用高度为："+height);
</script>
</body>
</html>
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8"/>
<title>Screen对象</title>
</head>
<body>
<h3>Screen对象</h3>
<script>
var width = screen.availWidth;
var height = screen.availHeight;
document.write("屏幕当前可用宽度为："+width+"<br>屏幕可用高度为："+height);
</script>
</body>
</html>
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8"/>
<title>History对象</title>
</head>
<body>
<h3>History对象</h3>
<button onClick="history.back()">后退</button>
<button onClick="history.forward()">前进</button>
</body>
</html>
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8"/>
<title>Location对象</title>
</head>
<body>
<h3>Location对象</h3>
<script>
location.href = "http://www.baidu.com";
</script>
</body>
</html>
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8"/>
<title>Navigator对象</title>
</head>
<body>
<h3>Navigator对象</h3>
<script>
var mag = "浏览器代码名："+navigator.appCodeName;
msg+="<br><br>浏览器名称："+navigator.appName;
msg+="<br><br>浏览器版本："+navigator.appVersion;
msg+="<br><br>浏览器是否允许使用："+navigator.cookieEnabled;
msg+="<br><br>浏览器所在操作系统："+navigator.platform;
msg+="<br><br>用户代理："+navigator.userAgent;
msg+="<br><br>浏览器语言："+navigator.language;
msg+="<br><br>浏览器品牌："+navigator.vendor;
document.write(msg);
</script>
</body>
</html>