JS标签的各种事件的举例

JS标签的各种事件的举例

1.鼠标单击事件( onclick )

 <!DOCTYPE HTML>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>单击事件 </title>
<script type="text/javascript">
function openwin(){
window.open('http://www.cnblogs.com/lonecloud/','_blank','height=600,width=400,top=100,toolbar=no,left=0,menubar=no,scrollbars=no,status=no');}
</script>
</head>
<body>
<form>
<input name="点击我" type="button" value="点击我" onClick="openwin()"/>
</form>
</body>
</html>

2.鼠标经过事件(onmouseover)

 <!DOCTYPE HTML>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title> 鼠标经过事件 </title>
<script type="text/javascript">
function message(){
confirm("请输入密码后,再单击确定!"); }
</script>
</head>
<body>
<form>
密码:<input name="password" type="password" >
<input name="确定" type="button" value="确定"onmouseover="message()"/>
</form>
</body>
</html>

3.鼠标移开事件(onmouseout)

 <!DOCTYPE HTML>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>鼠标移开事件 </title>
<script type="text/javascript">
function message(){
alert("不要移开,点击后进入我的博客!"); }
</script>
</head>
<body>
<form>
<a href="http://www.imooc.com" onmouseout="message()">点击我</a>
</form>
</body>
</html>

4.光标聚焦事件(onfocus)

 <!DOCTYPE HTML>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title> 光标聚焦事件 </title>
<script type="text/javascript">
function message(){
alert("请选择,您现在的职业!");
}
</script>
</head>
<body>
请选择您的职业:<br>
<form>
<select name="career" onfocus="message()">
<option>学生</option>
<option>教师</option>
<option>工程师</option>
<option>演员</option>
<option>会计</option>
</select>
</form>
</body>
</html>

5.失焦事件(onblur)

 <!DOCTYPE HTML>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title> 失焦事件 </title>
<script type="text/javascript">
function message(){
alert("请确定已输入密码后,在移开!"); }
</script>
</head>
<body>
<form>
用户:<input name="username" type="text" value="请输入用户名!" onblur="message()" >
密码:<input name="password" type="text" value="请输入密码!" >
</form>
</body>
</html>

6.内容选中事件(onselect)

 <!DOCTYPE HTML>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title> 内容选中事件 </title>
<script type="text/javascript">
function message(){
alert("您触发了选中事件!"); }
</script>
</head>
<body>
<form>
个人简介:<br>
<textarea name="summary" cols="60" rows="5" onselect="message()">请写入个人简介,不少于200字!</textarea>
</form>
</body>
</html>

7.文本框内容改变事件(onchange)

 <!DOCTYPE HTML>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title> 文本框内容改变事件 </title>
<script type="text/javascript">
function message(){
alert("您改变了文本内容!"); }
</script>
</head>
<body>
<form>
个人简介:<br>
<textarea name="summary" cols="60" rows="5"onChange="message()">请写入个人简介,不少于200字!</textarea>
</form>
</body>
</html>

8.加载事件(onload)

 <!DOCTYPE HTML>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title> 加载事件 </title>
<script type="text/javascript">
function message(){
alert("加载中,请稍等…"); }
</script>
</head>
<body onload="message()">
欢迎学习JavaScript。
</body>
</html>

9.卸载事件(onunload)

 <!DOCTYPE HTML>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title> 卸载事件 </title>
<script type="text/javascript">
window.onunload = onunload_message;
function onunload_message(){
alert("您确定离开该网页吗?");
}
</script>
</head>
<body onunload="onunload_message()">
欢迎学习JavaScript。
</body>
</html>
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