CSS
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>11_css</title>
</head>
<body>
<p style="color: blue;">尚硅谷的后裔</p>
<p style="color: green;">太阳的后裔</p>
<!--
设置css样式/读取css值
css()
-->
<script src="js/jquery-1.10.1.js" type="text/javascript"></script>
<script type="text/javascript">
/*
1. 得到第一个p标签的颜色
2. 设置所有p标签的文本颜色为red
3. 设置第2个p的字体颜色(#ff0011),背景(blue),宽(300px), 高(30px)
*/
$(function () {
//1. 得到第一个p标签的颜色
// console.log($('p:first').css('color'))
//2. 设置所有p标签的文本颜色为red
// $('p').css('color', 'red')
//3. 设置第2个p的字体颜色(#ff0011),背景(blue),宽(300px), 高(30px) //对象
/*$('p:eq(1)').css({
color: '#ff0011',
background: 'blue',
width: 300,
height: 30
})*/
})
</script>
</body>
</html>
展示效果
位置
相对于左上角的位置
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>12_offset和position</title>
</head>
<style type="text/css">
* {
margin: 0px;
}
.div1 {
position: absolute;
width: 200px;
height: 200px;
top: 20px;
left: 10px;
background: blue;
}
.div2 {
position: absolute;
width: 100px;
height: 100px;
top: 50px;
background: red;
}
.div3 {
position: absolute;
top: 250px;
}
</style>
<body style="height: 2000px;">
<div class="div1">
<div class="div2">测试offset</div>
</div>
<div class='div3'>
<button id="btn1">读取offset和position</button>
<button id="btn2">设置offset</button>
</div>
<!--
获取/设置标签的位置数据
* offset(): 相对页面左上角的坐标
* position(): 相对于父元素左上角的坐标
-->
<script src="js/jquery-1.10.1.js" type="text/javascript"></script>
<script type="text/javascript">
/*
需求:
1. 点击 btn1
打印 div1 相对于页面左上角的位置
打印 div2 相对于页面左上角的位置
打印 div1 相对于父元素左上角的位置
打印 div2 相对于父元素左上角的位置
2. 点击 btn2
设置 div2 相对于页面的左上角的位置
*/
$(function () {
// 读取offset和position
$('#btn1').click(function () {
var offset1 = $('.div1').offset()
console.log(offset1.left, offset1.top)
var offset2 = $('.div2').offset()
console.log(offset2.left, offset2.top)
var position1 = $('.div1').position()
console.log(position1.left, position1.top)
var position2 = $('.div2').position()
console.log(position2.left, position2.top)
})
// 设置offset
$('#btn2').click(function () {
$('.div2').offset({
left: 20,
top: 40
})
})
})
</script>
</body>
</html>
展示
滚动的位置
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>13_元素滚动</title>
</head>
<body style="height: 2000px;">
<div style="border:1px solid black;width:100px;height:150px;overflow:auto">
This is some text. This is some text. This is some text. This is some text.
This is some text. This is some text. This is some text. This is some text.
This is some text. This is some text. This is some text. This is some text.
This is some text. This is some text. This is some text. This is some text.
This is some text. This is some text. This is some text. This is some text.
This is some text. This is some text. This is some text. This is some text.
his is some text.
</div>
<br>
<br>
<br>
<button id="btn1">得到scrollTop</button>
<button id="btn2">设置scrollTop</button>
<!--
1. scrollTop():
读取/设置滚动条的Y坐标
2. $(document.body).scrollTop()+$(document.documentElement).scrollTop()
读取页面滚动条的Y坐标(兼容chrome和IE)
3. $('body,html').scrollTop(60);
滚动到指定位置(兼容chrome和IE)
-->
<script src="js/jquery-1.10.1.js"></script>
<script>
/*
需求:
1. 得到div或页面滚动条的坐标
2. 让div或页面的滚动条滚动到指定位置
*/
$(function () {
// 1. 得到div或页面滚动条的坐标
$('#btn1').click(function () {
console.log($('div').scrollTop())
console.log($('body').scrollTop() + $('html').scrollTop())
console.log($(document.body).scrollTop() + $(document.documentElement).scrollTop())
})
// 2. 让div或页面的滚动条滚动到指定位置
$('#btn2').click(function () {
$('div').scrollTop(150)
$('body, html').scrollTop(200)
})
})
</script>
</body>
</html>
展示
