DOM的通用属性
attr()：获取/设置元素的属性
removeAttr()：删除属性
prop()：获取/设置元素的属性
removeProp()：删除属性
attr和prop区别：
1、如果操作的是元素的固有属性，则建议使用prop
2、如果操作的是元素自定义的属性，则建议使用attr
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>获取属性</title>
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<script src="../js/jquery-3.3.1.min.js"></script>
<style type="text/css">
div,span{
width: 140px;
height: 140px;
margin: 20px;
background: #9999CC;
border: #000 1px solid;
float:left;
font-size: 17px;
font-family:Roman;
}
div.mini{
width: 30px;
height: 30px;
background: #CC66FF;
border: #000 1px solid;
font-size: 12px;
font-family:Roman;
}
div.visible{
display:none;
}
</style>
<script type="text/javascript">
$(function () {
//获取北京节点的name属性值
let attr = $("#bj").attr("name");
alert(attr);
//设置北京节点的name属性的值为dabeijing
$("#bj").attr("name","dabeijing");
//新增北京节点的discription属性 属性值是didu
$("#bj").attr("discription","didu");
//删除北京节点的name属性并检验name属性是否存在
$("#bj").removeAttr("name");
//获得hobby的的选中状态
let prop = $("#hobby").prop("type");
alert(prop);
});
</script>
</head>
<body>
<ul>
<li id="bj" name="beijing" xxx="yyy">北京</li>
<li id="tj" name="tianjin">天津</li>
</ul>
<input type="checkbox" id="hobby"/>
</body>
</html>
class属性操作
addClass()：添加class属性值
removeClass()：删除class属性值
toggleClass()：切换class属性
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>样式操作</title>
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<script src="../js/jquery-3.3.1.min.js"></script>
<style type="text/css">
.one{
width: 200px;
height: 140px;
margin: 20px;
background: red;
border: #000 1px solid;
float:left;
font-size: 17px;
font-family:Roman;
}
div,span{
width: 140px;
height: 140px;
margin: 20px;
background: #9999CC;
border: #000 1px solid;
float:left;
font-size: 17px;
font-family:Roman;
}
div .mini{
width: 40px;
height: 40px;
background: #CC66FF;
border: #000 1px solid;
font-size: 12px;
font-family:Roman;
}
div .mini01{
width: 40px;
height: 40px;
background: #CC66FF;
border: #000 1px solid;
font-size: 12px;
font-family:Roman;
}
/*待用的样式*/
.second{
width: 300px;
height: 340px;
margin: 20px;
background: yellow;
border: pink 3px dotted;
float:left;
font-size: 22px;
font-family:Roman;
}
</style>
<script type="text/javascript">
$(function () {
//<input type="button" value="采用属性增加样式(改变id=one的样式)" id="b1"/>
$("#b1").click(function () {
$("#one").prop("class","second");
});
//<input type="button" value=" addClass" id="b2"/>
$("#b2").click(function () {
$("#one").addClass("second");
});
//<input type="button" value="removeClass" id="b3"/>
$("#b3").click(function () {
$("#one").removeClass("second");
});
//<input type="button" value=" 切换样式" id="b4"/>
$("#b4").click(function () {
$("#one").toggleClass("second");
});
//<input type="button" value=" 通过css()获得id为one背景颜色" id="b5"/>
$("#b5").click(function () {
let css = $("#one").css("backgroundColor");
alert(css);
});
//<input type="button" value=" 通过css()设置id为one背景颜色为绿色" id="b6"/>
$("#b6").click(function () {
$("#one").css("backgroundColor","green");
});
});
</script>
</head>
<body>
<input type="button" value="保存" class="mini" name="ok" class="mini" />
<input type="button" value="采用属性增加样式(改变id=one的样式)" id="b1"/>
<input type="button" value=" addClass" id="b2"/>
<input type="button" value="removeClass" id="b3"/>
<input type="button" value=" 切换样式" id="b4"/>
<input type="button" value=" 通过css()获得id为one背景颜色" id="b5"/>
<input type="button" value=" 通过css()设置id为one背景颜色为绿色" id="b6"/>
<h1>有一种奇迹叫坚持</h1>
<h2>自信源于努力</h2>
<div id="one">
id为one
</div>
<div id="two" class="mini" >
id为two class是 mini
<div class="mini" >class是 mini</div>
</div>
<div class="one" >
class是 one
<div class="mini" >class是 mini</div>
<div class="mini" >class是 mini</div>
</div>
<div class="one" >
class是 one
<div class="mini01" >class是 mini01</div>
<div class="mini" >class是 mini</div>
</div>
<span class="spanone"> span
</span>
</body>
</html>
标签：function,attr,DOM,background,font,class,属性 From： https://www.cnblogs.com/qihaokuan/p/17080761.html