1，.text()设置文本,.html()设置html, .val()设置值的使用
<!DOCTYPE html>
<html>
<head>
<title>home</title>
<meta http-equiv="Content-Type" content="text/html"; charset="utf-8" />
<script type="text/javascript" src="js/jquery-1.11.3.js"></script>
<script>
$(document).ready(function(){
$("#btn1").click(function(){
// alert("test");
$("#test1").text("hello world!");
});
$("#btn2").click(function(){
$("#test2").html("<b>html content</b>");
});
$("#btn3").click(function(){
$("#test3").val("input content");
});
});
</script>
</head>
<body>
<p id="test1">这是段落</p>
<p id="test2">这里是内容</p>
<p>Input field:<input type="text" id="test3" value="mouse"></p>
<button id="btn1">设置文本</button>
<button id="btn2">设置html</button>
<button id="btn3">设置值</button>
</body>
</html>
2.使用.val()方法获取值
<!DOCTYPE html>
<html>
<head>
<title></title>
<meta http-equiv="Content-Type" content="text/html;charset=utf-8" />
<script type="text/javascript" src="js/jquery-1.11.3.js"></script>
<script>
$(function(){
$("button").click(function(){
alert("value:"+$("#test").val());
});
});
</script>
</head>
<body>
<p>姓名：<input type="text" id="test" value="我是值"></p>
<button>显示值</button>
</body>
</html>
3 .attr() 方法用于获取属性值
<!DOCTYPE html>
<html>
<head>
<title></title>
<meta http-equiv="Content-Type" content="text/html;charset=utf-8" />
<script type="text/javascript" src="js/jquery-1.11.3.js"></script>
<script>
$(function(){
$("button").click(function(){
alert($("#baidu").attr("href"));
});
});
</script>
</head>
<body>
<p><a href="http://www.baidu.com" id="baidu" >百度</a></p>
<button>获取href属性值</button>
</body>
</html>