jquery(三)
动画效果
显示隐藏
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
<script src="jquery-2.1.4.min.js"></script>
<script>
$(document).ready(function() {
$("#hide").click(function () {
$("p").hide(1000);
});
$("#show").click(function () {
$("p").show(1000);
});
//用于切换被选元素的 hide() 与 show() 方法。
$("#toggle").click(function () {
$("p").toggle();
});
})
</script>
<link type="text/css" rel="stylesheet" href="style.css">
</head>
<body>
<p>hello</p>
<button id="hide">隐藏</button>
<button id="show">显示</button>
<button id="toggle">切换</button>
</body>
</html>
滑动
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
<script src="jquery-2.1.4.min.js"></script>
<script>
$(document).ready(function(){
$("#slideDown").click(function(){
$("#content").slideDown(1000);
});
$("#slideUp").click(function(){
$("#content").slideUp(1000);
});
$("#slideToggle").click(function(){
$("#content").slideToggle(1000);
})
});
</script>
<style>
#content{
text-align: center;
background-color: lightblue;
border:solid 1px red;
display: none;
padding: 50px;
}
</style>
</head>
<body>
<div id="slideDown">出现</div>
<div id="slideUp">隐藏</div>
<div id="slideToggle">toggle</div>
<div id="content">helloworld</div>
</body>
</html>
淡入淡出
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
<script src="jquery-2.1.4.min.js"></script>
<script>
$(document).ready(function(){
$("#in").click(function(){
$("#id1").fadeIn(1000);
});
$("#out").click(function(){
$("#id1").fadeOut(1000);
});
$("#toggle").click(function(){
$("#id1").fadeToggle(1000);
});
$("#fadeto").click(function(){
$("#id1").fadeTo(1000,0.4);
});
});
</script>
</head>
<body>
<button id="in">fadein</button>
<button id="out">fadeout</button>
<button id="toggle">fadetoggle</button>
<button id="fadeto">fadeto</button>
<div id="id1" style="display:none; width: 80px;height: 80px;background-color: blueviolet"></div>
</body>
</html>
回调函数
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
<script src="jquery-2.1.4.min.js"></script>
</head>
<body>
<button>hide</button>
<p>helloworld helloworld helloworld</p>
<script>
$("button").click(function(){
$("p").hide(1000,function(){
alert($(this).html())
})
})
</script>
</body>
</html>
css操作
css位置操作
$("").offset([coordinates])
$("").position()
$("").scrollTop([val])
$("").scrollLeft([val])
示例1：
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
<style>
.test1{
width: 200px;
height: 200px;
background-color: wheat;
}
</style>
</head>
<body>
<h1>this is offset</h1>
<div class="test1"></div>
<p></p>
<button>change</button>
</body>
<script src="jquery-3.1.1.js"></script>
<script>
var $offset=$(".test1").offset();
var lefts=$offset.left;
var tops=$offset.top;
$("p").text("Top:"+tops+" Left:"+lefts);
$("button").click(function(){
$(".test1").offset({left:200,top:400})
})
</script>
</html>
示例2:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
<style>
*{
margin: 0;
}
.box1{
width: 200px;
height: 200px;
background-color: rebeccapurple;
}
.box2{
width: 200px;
height: 200px;
background-color: darkcyan;
}
.parent_box{
position: relative;
}
</style>
</head>
<body>
<div class="box1"></div>
<div class="parent_box">
<div class="box2"></div>
</div>
<p></p>
<script src="jquery-3.1.1.js"></script>
<script>
var $position=$(".box2").position();
var $left=$position.left;
var $top=$position.top;
$("p").text("TOP:"+$top+"LEFT"+$left)
</script>
</body>
</html>
示例3:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
<style>
body{
margin: 0;
}
.returnTop{
height: 60px;
width: 100px;
background-color: peru;
position: fixed;
right: 0;
bottom: 0;
color: white;
line-height: 60px;
text-align: center;
}
.div1{
background-color: wheat;
font-size: 5px;
overflow: auto;
width: 500px;
height: 200px;
}
.div2{
background-color: darkgrey;
height: 2400px;
}
.hide{
display: none;
}
</style>
</head>
<body>
<div class="div1 div">
<h1>hello</h1>
<h1>hello</h1>
<h1>hello</h1>
<h1>hello</h1>
<h1>hello</h1>
<h1>hello</h1>
<h1>hello</h1>
<h1>hello</h1>
<h1>hello</h1>
<h1>hello</h1>
<h1>hello</h1>
<h1>hello</h1>
<h1>hello</h1>
<h1>hello</h1>
<h1>hello</h1>
<h1>hello</h1>
</div>
<div class="div2 div"></div>
<div class="returnTop hide">返回顶部</div>
<script src="jquery-3.1.1.js"></script>
<script>
$(window).scroll(function(){
var current=$(window).scrollTop();
console.log(current);
if (current>100){
$(".returnTop").removeClass("hide")
}
else {
$(".returnTop").addClass("hide")
}
});
$(".returnTop").click(function(){
$(window).scrollTop(0)
});
</script>
</body>
</html>
尺寸操作
$("").height([val|fn])
$("").width([val|fn])
$("").innerHeight()
$("").innerWidth()
$("").outerHeight([soptions])
$("").outerWidth([options])
示例：
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
<style>
*{
margin: 0;
}
.box1{
width: 200px;
height: 200px;
background-color: wheat;
padding: 50px;
border: 50px solid rebeccapurple;
margin: 50px;
}
</style>
</head>
<body>
<div class="box1">
DIVDIDVIDIV
</div>
<p></p>
<script src="jquery-3.1.1.js"></script>
<script>
var $height=$(".box1").height();
var $innerHeight=$(".box1").innerHeight();
var $outerHeight=$(".box1").outerHeight();
var $margin=$(".box1").outerHeight(true);
$("p").text($height+"---"+$innerHeight+"-----"+$outerHeight+"-------"+$margin)
</script>
</body>
</html>
