正文
jquery api 常见 事件操作
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change.html
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>ready.html</title>
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<script type="text/javascript" src="../js/jquery-1.8.2.js"></script>
</head>
<body>
<select>
<option value="bj">北京</option>
<option value="sh">上海</option>
<option value="gz">广州</option>
</select> <script type="text/javascript">
//当<select>标签触发onchange事件,显示选中<option>的value和innerHTML属性的值
$("select").change(function(){
var $option = $("select option:selected");
var value = $option.val();
var html = $option.html();
alert(value+":"+html);
}); </script>
</body>
</html>
focus.html
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>focus.html</title>
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<script type="text/javascript" src="../js/jquery-1.8.2.js"></script>
</head>
<body>
<input type="text" value="加载页面时获取光标并选中所有文字" size="50"/>
<script type="text/javascript">
//加载页面时获取光标并选中所有文字
$(function(){
//将光标定位于文本框
var $text = $(":text");
//选中文本框中的内容
$text.select();
});
</script>
</body>
</html>
keyup.html
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>focus.html</title>
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<script type="text/javascript" src="../js/jquery-1.8.2.js"></script>
</head>
<body>
<script type="text/javascript">
//当按键弹起时，显示所按键的code码
$(document).keyup(function(){
//获取浏览器产生的事件对象，该事件对象，无需程序员代码创建，
//是每个浏览器自已产生的，即IE和firefox浏览器产生的事件
//对象可以不同。
var code = event.keyCode;
alert(code);
});
</script>
</body>
</html>
mousemove.html
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>focus.html</title>
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<script type="text/javascript" src="../js/jquery-1.8.2.js"></script>
</head>
<body> X=<input type="text" id="xID"/>
<br/>
Y=<input type="text" id="yID"/> <script type="text/javascript">
$(document).mousemove(function(){
//显示鼠标移动时的X和Y座标
var x = event.clientX;
var y = event.clientY;
//将x和y坐标设置到文本框中
$("#xID").val(x);
$("#yID").val(y);
});
</script> </body>
</html>
mouseover_mouseout.html
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>focus.html</title>
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<script type="text/javascript" src="../js/jquery-1.8.2.js"></script>
</head>
<body>
<table border="2" align="center" width="80%" id="tableID">
<tr>
<td>张三</td>
<td>男</td>
<td>22</td>
</tr>
<tr>
<td>李四</td>
<td>男</td>
<td>24</td>
</tr>
<tr>
<td>王五</td>
<td>男</td>
<td>26</td>
</tr>
<tr>
<td>周六</td>
<td>男</td>
<td>28</td>
</tr>
</table>
<hr/>
<img height="120px" src="../images/zgl.jpg" style="position:absolute;left:30%"/>
<img height="120px" src="../images/lb.jpg" style="position:absolute;left:60%"/>
<script type="text/javascript">
//鼠标移到某行上，某行背景变色，字体加租
$("table tr").mouseover(function(){
$(this).css("background-color","#AABBCC");
});
//鼠标移出某行，某行还原
$("table tr").mouseout(function(){
$(this).css("background-color","white");
});
//鼠标移到某图片上，为图片加边框
$("img").mouseover(function(){
$(this).css("border-style","ridge");
});
//鼠标移出图片，图片还原
$("img").mouseout(function(){
$(this).css("border-style","none");
});
</script>
</body>
</html>
ready.html
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>ready.html</title>
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<script type="text/javascript" src="../js/jquery-1.8.2.js"></script>
</head>
<body>
<script type="text/javascript">
//定义a()和b()二个方法
function a(){
alert("a");
}
function b(){
alert("b");
}
/*使用DOM方式加载a()和b()二个方法
window.onload = function(){
a();
}
window.onload = function(){
b();
}
*/
/*使用jQuery方式加载a()和b()二个方法
$(document).ready(function(){
a();
});
$(document).ready(function(){
b();
});
*/ //使用jQuery最简方式加载a()和b()二个方法
$(function(){
a();
});
$(function(){
b();
});
</script>
</body>
</html>
submit.html
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>ready.html</title>
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<script type="text/javascript" src="../js/jquery-1.8.2.js"></script>
</head>
<body>
<form action="submit.html" method="post">
<select>
<option value="bj">北京</option>
<option value="sh" selected>上海</option>
<option value="gz">广州</option>
</select>
<input type="submit" value="表单提交"/>
</form>
<script type="text/javascript">
//当表单提交前检测
$("form").submit(function(){
//..
return false;
});
</script>
</body>
</html>
