program1

140805 -[jquery] css,selector

2014.09.18 19:54 read.347

$(document).ready(function(){
// jQuery methods go here...
});

body가 읽힌 후에 실행문을 실행시킴

약식표기법

$(function(){
// jQuery methods go here...
});

$("선택자").액션;

선택자: *, 태그명, 아이디명, .클래스명, 태그명1, 태그명2, 태그명1>태그명2 등을 사용할 수 있다

액션은 이벤트나 css, 또는 또다른 선택자를 선택할 수 있는 기능을 한다.

$("선택자").액션.액션 - $("선택자").액션이 선택자가 된다.

css("propertyname");

css의 속성 값을 가져온다.

$("p").css("background-color");

css("propertyname","value");

$("p").css("background-color","yellow");

ex)

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" lang="ko" xml:lang="ko">
	<head>
		<meta http-equiv="content-type" content="text/html;charset=utf-8" />
		<title> new document </title>
		<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
		<script>
			$(document).ready(function(){
				$("div").css("background-color","red"); //div의 백그라운드 컬러를 red로 변경
				$("#d").css("background-color","blue"); //id가 d인인 엘리먼트 백그라운드 컬러를 blue로 변경
			});
		</script>
	</head>
	<body>
		<div>A</div>
		<div id="d">B</div>
	</body>
</html>

$("div").css("background-color","yellow");
$("div").css("color","green");

한줄로 쓰는 표현

$("div").css({"background-color":"yellow","color":"green"})

$("선택자").click(function(){ // jQuery methods go here...});

선택자를 클릭하면 ()안의 jquery를 실행해라

:first - 첫번째 요소 선택자

:last - 자식요소 선택자

ex)

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" lang="ko" xml:lang="ko">
	<head>
		<meta http-equiv="content-type" content="text/html;charset=utf-8" />
		<title> new document </title>
		<style type="text/css">
			li{list-style:none;height:24px}
			#bx1{margin-bottom:5px;width:100%;height:30px;background:#999}
			#bx2{margin-bottom:5px;width:100%;height:30px;background:pink}
			#bx3{margin-bottom:5px;width:100%;height:80px;background:#aaa}
		</style>
		<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js" type="text/javascript"></script>
		<script type="text/javascript">
			$(document).ready(function(){
				$("div:first").click(function(){ //A를 클릭하면 세번째 li만 백그라운드 적용
					$("div li:last").css("background-color","red");
				});
			});
		</script>
	</head>
	<body>
		<div>첫번째 div</div>
		<div>
			<ul>
				<li>1</li>
				<li><span>test1</span><span class="sp">test2</span></li>
				<li><img src="images/img_01.jpg" alt="" /></li>
			</ul>
		</div>
	</body>
</html>

미리보기

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" lang="ko" xml:lang="ko">
	<head>
		<meta http-equiv="content-type" content="text/html;charset=utf-8" />
		<title> new document </title>
		<style type="text/css">
			a, a:hover,a:visited{color:#333;text-decoration:none;}
			li{list-style:none;height:24px}
			#bx1{margin-bottom:5px;width:100%;height:30px;background:#999}
			#bx2{margin-bottom:5px;width:100%;height:30px;background:pink}
			#bx3{margin-bottom:5px;width:100%;height:80px;background:#aaa}
		</style>
		<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js" type="text/javascript"></script>
		<script type="text/javascript">
			$(document).ready(function(){
				$("div:first").click(function(){ //A를 클릭하면 세번째 li만 백그라운드 적용
					$("img").css("border","2px solid red");
					$(".sp").css("color","red");
					$("span:first").css("color","blue");
				});
			});
		</script>
	</head>
	<body>
		<div><a href="#">첫번째 div</a></div>
		<div>
			<ul>
				<li>1</li>
				<li><span>test1</span><span class="sp">test2</span></li>
				<li><img src="images/img_01.jpg" alt="" /></li>
			</ul>
		</div>
	</body>
</html>

미리보기

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" lang="ko" xml:lang="ko">
	<head>
		<meta http-equiv="content-type" content="text/html;charset=utf-8" />
		<title> new document </title>
		<style type="text/css">
			a, a:hover,a:visited{color:#333;text-decoration:none;}
			li{list-style:none;height:24px}
			#bx1{margin-bottom:5px;width:100%;height:30px;background:#999}
			#bx2{margin-bottom:5px;width:100%;height:30px;background:pink}
			#bx3{margin-bottom:5px;width:100%;height:80px;background:#aaa}
		</style>
		<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js" type="text/javascript"></script>
		<script type="text/javascript">
			$(document).ready(function(){
				$("button").click(function(){
					$("#bx").css("width","100px");
					$("#bx").css("height","100px");
					$("#bx").css("background","blue");
/* $("#bx").css({"width":"100px","height":"100px","background":"blue"}); */
				});
			});
		</script>
	</head>
	<body>
		<div id="bx"></div>
		<button>BTN</button>
	</body>
</html>

미리보기

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" lang="ko" xml:lang="ko">
	<head>
		<meta http-equiv="content-type" content="text/html;charset=utf-8" />
		<title> new document </title>
		<style type="text/css">
			a, a:hover,a:visited{color:#333;text-decoration:none;}
			li{list-style:none;height:24px}
			#bx1{margin-bottom:5px;width:100%;height:30px;background:#999}
			#bx2{margin-bottom:5px;width:100%;height:30px;background:pink}
			#bx3{margin-bottom:5px;width:100%;height:80px;background:#aaa}
		</style>
		<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js" type="text/javascript"></script>
		<script type="text/javascript">
			$(document).ready(function(){
				$("button:first").click(function(){
					$("#bx1").css("height","200px");
				})
				$("button:odd").click(function(){
					$("#bx1").css({"opacity":"0.5"});
				})
				$("button:last").click(function(){
					$("#bx1").css({"position":"absolute","z-index":"1"});
					$("p").css({"position":"fixed","z-index":"10"});
				});
			});
		</script>
	</head>
	<body>
		<div id="bx1"></div>
		<p><button>BTN1</button><button>BTN2</button><button>BTN3</button></p>
		<!-- BTN1-height값 증가
			 BTN2-투명도 변경
			 BTN3-버튼뒤로이동 -->
		
		<div id="bx2"></div>
		<div id="bx3"></div>
	</body>
</html>

미리보기

BTN1을 누르면 bx1의 높이값이 변함

BTN2를 누르면 bx1의 알파값이 변함

BTN을 누르면 bx1이 absolute되어 하단에 있는 bx가 위로 올라오게 된다

jq_css_4.gif.gif

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" lang="ko" xml:lang="ko">
	<head>
		<meta http-equiv="content-type" content="text/html;charset=utf-8" />
		<title> new document </title>
		<style type="text/css">
			a, a:hover,a:visited{color:#333;text-decoration:none;}
			li{list-style:none;height:24px}
			#bx1{margin-bottom:5px;width:100%;height:30px;background:#999}
			#bx2{margin-bottom:5px;width:100%;height:30px;background:pink}
			#bx3{margin-bottom:5px;width:100%;height:80px;background:#aaa}
		</style>
		<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js" type="text/javascript"></script>
		<script type="text/javascript">
			$(document).ready(function(){
				$("button:first").click(function(){
					var temp=$("div").css("background-color"); //div의 백그라운드 컬러값을 가져와서 temp라는 변수에 넣어준다.
					alert(temp);
				})
				$("button:odd").click(function(){
					alert($("div").css("height")); //div의 높이값을 가져와 경고창에 출력해준다
				});
			});
		</script>
	</head>
	<body>
		<div id="bx1"></div>
		<p><button>BTN1</button><button>BTN2</button></p>
	</body>
</html>

미리보기

jq_css_5.gif.gif

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" lang="ko" xml:lang="ko">
	<head>
		<meta http-equiv="content-type" content="text/html;charset=utf-8" />
		<title> new document </title>
		<style type="text/css">
			a, a:hover,a:visited{color:#333;text-decoration:none;}
			li{list-style:none;height:24px}
			#bx1{margin-bottom:5px;width:100%;height:30px;background:#999}
			#bx2{margin-bottom:5px;width:100%;height:30px;background:pink}
			#bx3{margin-bottom:5px;width:100%;height:80px;background:#aaa}
		</style>
		<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js" type="text/javascript"></script>
		<script type="text/javascript">
			$(document).ready(function(){
				$("#bx2").click(function(){
					var temp=$("#bx2").css("height");
					var temp1=$("#bx2").css("background-color");
					$("#bx3").css({"height":temp,"background-color":temp1});
				});
			});
		</script>
	</head>
	<body>
		<div id="bx2"></div>
		<div id="bx3"></div>
	</body>
</html>

미리보기

jq_css_6.gif.gif

More Examples of jQuery Selectors

Syntax	Description	Example
$("*")	Selects all elements	Try it
$(this)	Selects the current HTML element	Try it
$("p.intro")	Selects all <p> elements with class="intro"	Try it
$("p:first")	Selects the first <p> element	Try it
$("ul li:first")	Selects the first <li> element of the first <ul>	Try it
$("ul li:first-child")	Selects the first <li> element of every <ul>	Try it
$("[href]")	Selects all elements with an href attribute	Try it
$("a[target='_blank']")	Selects all <a> elements with a target attribute value equal to "_blank"	Try it
$("a[target!='_blank']")	Selects all <a> elements with a target attribute value NOT equal to "_blank"	Try it
$(":button")	Selects all <button> elements and <input> elements of type="button"	Try it
$("tr:even")	Selects all even <tr> elements	Try it
$("tr:odd")	Selects all odd <tr> elements	Try it

jQuery Selectors

Selector	Example	Selects
*	$("*")	All elements
#id	$("#lastname")	The element with id="lastname"
.class	$(".intro")	All elements with class="intro"
.class,.class	$(".intro,.demo")	All elements with the class "intro" or "demo"
element	$("p")	All <p> elements
el1,el2,el3	$("h1,div,p")	All <h1>, <div> and <p> elements

:first	$("p:first")	The first <p> element
:last	$("p:last")	The last <p> element
:even	$("tr:even")	All even <tr> elements
:odd	$("tr:odd")	All odd <tr> elements

:first-child	$("p:first-child")	All <p> elements that are the first child of their parent
:first-of-type	$("p:first-of-type")	All <p> elements that are the first <p> element of their parent
:last-child	$("p:last-child")	All <p> elements that are the last child of their parent
:last-of-type	$("p:last-of-type")	All <p> elements that are the last <p> element of their parent
:nth-child(n)	$("p:nth-child(2)")	All <p> elements that are the 2nd child of their parent
:nth-last-child(n)	$("p:nth-last-child(2)")	All <p> elements that are the 2nd child of their parent, counting from the last child
:nth-of-type(n)	$("p:nth-of-type(2)")	All <p> elements that are the 2nd <p> element of their parent
:nth-last-of-type(n)	$("p:nth-last-of-type(2)")	All <p> elements that are the 2nd <p> element of their parent, counting from the last child
:only-child	$("p:only-child")	All <p> elements that are the only child of their parent
:only-of-type	$("p:only-of-type")	All <p> elements that are the only child, of its type, of their parent

parent > child	$("div > p")	All <p> elements that are a direct child of a <div> element
parent descendant	$("div p")	All <p> elements that are descendants of a <div> element
element + next	$("div + p")	The <p> element that are next to each <div> elements
element ~ siblings	$("div ~ p")	All <p> elements that are siblings of a <div> element

:eq(index)	$("ul li:eq(3)")	The fourth element in a list (index starts at 0)
:gt(no)	$("ul li:gt(3)")	List elements with an index greater than 3
:lt(no)	$("ul li:lt(3)")	List elements with an index less than 3
:not(selector)	$("input:not(:empty)")	All input elements that are not empty

:header	$(":header")	All header elements <h1>, <h2> ...
:animated	$(":animated")	All animated elements
:focus	$(":focus")	The element that currently has focus
:contains(text)	$(":contains('Hello')")	All elements which contains the text "Hello"
:has(selector)	$("div:has(p)")	All <div> elements that have a <p> element
:empty	$(":empty")	All elements that are empty
:parent	$(":parent")	All elements that are a parent of another element
:hidden	$("p:hidden")	All hidden <p> elements
:visible	$("table:visible")	All visible tables
:root	$(":root")	The document's root element
:lang(language)	$("p:lang(de)")	All <p> elements with a lang attribute value starting with "de"

[attribute]	$("[href]")	All elements with a href attribute
[attribute=value]	$("[href='default.htm']")	All elements with a href attribute value equal to "default.htm"
[attribute!=value]	$("[href!='default.htm']")	All elements with a href attribute value not equal to "default.htm"
[attribute$=value]	$("[href$='.jpg']")	All elements with a href attribute value ending with ".jpg"
[attribute\|=value]	$("[title\|='Tomorrow']")	All elements with a title attribute value equal to 'Tomorrow', or starting with 'Tomorrow' followed by a hyphen
[attribute^=value]	$("[title^='Tom']")	All elements with a title attribute value starting with "Tom"
[attribute~=value]	$("[title~='hello']")	All elements with a title attribute value containing the specific word "hello"
[attribute=value*]	$("[title*='hello']")	All elements with a title attribute value containing the word "hello"

:input	$(":input")	All input elements
:text	$(":text")	All input elements with type="text"
:password	$(":password")	All input elements with type="password"
:radio	$(":radio")	All input elements with type="radio"
:checkbox	$(":checkbox")	All input elements with type="checkbox"
:submit	$(":submit")	All input elements with type="submit"
:reset	$(":reset")	All input elements with type="reset"
:button	$(":button")	All input elements with type="button"
:image	$(":image")	All input elements with type="image"
:file	$(":file")	All input elements with type="file"
:enabled	$(":enabled")	All enabled input elements
:disabled	$(":disabled")	All disabled input elements
:selected	$(":selected")	All selected input elements
:checked	$(":checked")	All checked input elements

[출처] http://www.w3schools.com/jquery

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29	140808_[jquery] val	2014.09.22
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More Examples of jQuery Selectors

jQuery Selectors

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