菜鸟学习javascript实例教程
2008-02-23 07:41:41来源:互联网 阅读 ()
用JS显示文字的例子:
<html>
<body>
<script type="text/javascript">
document.write("Hello World!")
</script>
</body>
</html>
用HTML标签来格式化文本的例子:
<html>
<body>
<script type="text/javascript">
document.write("<h1>Hello World!</h1>")
</script>
</body>
</html>
书写JS位置的例子:
打开页面弹出窗口的例子
<html>
<head>
<script type="text/javascript">
function message()
{
alert("网页教学网欢迎你的光临")
}
</script>
</head>
<body onload="message()">
</body>
</html>
在BODY区内输出显示文本的例子:
<html>
<head>
</head>
<body>
<script type="text/javascript">
document.write("欢迎光临网页教学网http://www.webjx.com")
</script>
</body>
</html>
调用其它的一个JS文件的例子:
<html>
<head>
</head>
<body>
<script src="xxx.js">
</script>
<p>
The actual script is in an external script file called "xxx.js".
</p>
</body>
</html>
变量的使用
变量使用的例子:
<html>
<body>
<script type="text/javascript">
var name = "Hege"
document.write(name)
document.write("<h1>" name "</h1>")
</script>
<p>This example declares a variable, assigns a value to it, and then displays the variable.</p>
<p>Then the variable is displayed one more time, only this time as a heading.</p>
</body>
</html>
函数的例子
函数使用的一个例子:
<html>
<head>
<script type="text/javascript">
function myfunction()
{
alert("HELLO")
}
</script>
</head>
<body>
<form>
<input type="button"
onclick="myfunction()"
value="Call function">
</form>
<p>By pressing the button, a function will be called. The function will alert a message.</p>
</body>
</html>
带一个参数的函数的例子:
<html>
<head>
<script type="text/javascript">
function myfunction(txt)
{
alert(txt)
}
</script>
</head>
<body>
<form>
<input type="button"
onclick="myfunction('Hello')"
value="Call function">
</form>
<p>By pressing the button, a function with an argument will be called. The function will alert
this argument.</p>
</body>
</html>
不同的两个参数调用函数的例子:
<html>
<head>
<script type="text/javascript">
function myfunction(txt)
{
alert(txt)
}
</script>
</head>
<body>
<form>
<input type="button"
onclick="myfunction('Good Morning!')"
value="In the Morning">
<input type="button"
onclick="myfunction('Good Evening!')"
value="In the Evening">
</form>
<p>
When you click on one of the buttons, a function will be called. The function will alert
the argument that is passed to it.
</p>
</body>
</html>
利用函数返回值的例子:
<html>
<head>
<script type="text/javascript">
function myFunction()
{
return ("Hello, have a nice day!")
}
</script>
</head>
<body>
<script type="text/javascript">
document.write(myFunction())
</script>
<p>The script in the body section calls a function.</p>
<p>The function returns a text.</p>
</body>
</html>
带参数的函数返回值的例子:
<html>
<head>
<script type="text/javascript">
function total(numberA,numberB)
{
return numberA numberB
}
</script>
</head>
<body>
<script type="text/javascript">
document.write(total(2,3))
</script>
<p>The script in the body section calls a function with two arguments, 2 and 3.</p>
<p>The function returns the sum of these two arguments.</p>
</body>
</html>
条件语句的例子
简单条件语句的例子:
<html>
<body>
<script type="text/javascript">
var d = new Date()
var time = d.getHours()
if (time < 10)
{
document.write("<b>Good morning</b>")
}
</script>
<p>
This example demonstrates the If statement.
</p>
标签:
版权申明:本站文章部分自网络,如有侵权,请联系:west999com@outlook.com
特别注意:本站所有转载文章言论不代表本站观点,本站所提供的摄影照片,插画,设计作品,如需使用,请与原作者联系,版权归原作者所有
上一篇:网页制作中表单相关特效整理
IDC资讯: 主机资讯 注册资讯 托管资讯 vps资讯 网站建设
网站运营: 建站经验 策划盈利 搜索优化 网站推广 免费资源
网络编程: Asp.Net编程 Asp编程 Php编程 Xml编程 Access Mssql Mysql 其它
服务器技术: Web服务器 Ftp服务器 Mail服务器 Dns服务器 安全防护
软件技巧: 其它软件 Word Excel Powerpoint Ghost Vista QQ空间 QQ FlashGet 迅雷
网页制作: FrontPages Dreamweaver Javascript css photoshop fireworks Flash