JavaScript/jQuery

【jQuery/Selector #52】:only-of-type Selector

1Q74 2023. 3. 15. 02:51

1. Description

jQuery("only-of-type")
형제 Element가 없고, 태그명이 같고, 한 개만 존재하는 Element를 찾는다.

2. Example

#1버튼을 클릭하면 <td>태그 내에 있는 Element들 중에서, 태그명을 기준으로하여 한 개 뿐인 Element를 찾아 배경색을 변경한다. 버튼을 클릭할 때마다 스타일이 토글된다.

[1q74.tistory.com] javascript/jquery/selector/only-of-type
child#1-1
child#1-2
child#1-3
child#2-1
child#2-2 child#2-3
  • child#3-1
    • child#3-2
    child#3-3
  • child#4-1
  • child#4-2
    • child#4-3




    [HTML Code]
    [//HTML Code]

    3. Code

    더보기 
    <!-- ---------------------------------------------------------
  --
  -- Author: 1q74.tistory.com
  --
  --------------------------------------------------------- -->
<!doctype html>
<html lang="ko">
<head>
<meta charset="utf-8">
<title>[1q74.tistory.com] javascript/jquery/selector/only-of-type</title>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.6.3/jquery.min.js"></script>
</head>
<body>

	<div name="_1q74-example-root">
		<div name="_1q74-example-1">
			<table border="1">
				<tr>
					<td>
						<h5>child#1-1</h5>
						<h5>child#1-2</h5>
						<span>child#1-3</span>
					</td>
				</tr>
				<tr>
					<td>
						<div>child#2-1</div>
						<span>child#2-2</span>
						<span>child#2-3</span>
					</td>
				</tr>
				<tr>
					<td>
						<li>child#3-1</li>
						<div>child#3-2</div>
						<div>child#3-3</div>
					</td>
				</tr>
				<tr>
					<td>
						<li>child#4-1</li>
						<li>child#4-2</li>
						<h5>child#4-3</h5>
					</td>
				</tr>
			</table>
		</div>

		<div name="_1q74-example-bottom">
			<br/>
			<button name="btn-nth-of-type-1">#1. $("[name='_1q74-example-1'] span:only-of-type")</button><br/>
			<button name="btn-nth-of-type-2">#2. $("[name='_1q74-example-1'] div:only-of-type")</button><br/>
			<button name="btn-nth-of-type-3">#3. $("[name='_1q74-example-1'] li:only-of-type")</button><br/>
			<button name="btn-nth-of-type-4">#4. $("[name='_1q74-example-1'] h5:only-of-type")</button>
		</div>
	</div>

	<hr/>
	<h5>[HTML Code]</h5>
	<div name="_1q74-source">
	</div>
	<h5>[//HTML Code]</h5>

<script>
var btnContainer = $("[name='_1q74-example-bottom']");
var btnChild1 = btnContainer.find("[name='btn-nth-of-type-1']");
var btnChild2 = btnContainer.find("[name='btn-nth-of-type-2']");
var btnChild3 = btnContainer.find("[name='btn-nth-of-type-3']");
var btnChild4 = btnContainer.find("[name='btn-nth-of-type-4']");

var child1 = $("[name='_1q74-example-1'] span:only-of-type");
var child2 = $("[name='_1q74-example-1'] div:only-of-type");
var child3 = $("[name='_1q74-example-1'] li:only-of-type");
var child4 = $("[name='_1q74-example-1'] h5:only-of-type");

btnChild1.click(function() {
	if(!child1.is("[style]")) {
		child1.css("background", "#AE5907");
	} else {
		child1.removeAttr("style");
	}
});

btnChild2.click(function() {
	if(!child2.is("[style]")) {
		child2.css("background", "#07AE3A");
	} else {
		child2.removeAttr("style");
	}
});

btnChild3.click(function() {
	if(!child3.is("[style]")) {
		child3.css("background", "#02764C");
	} else {
		child3.removeAttr("style");
	}
});

btnChild4.click(function() {
	if(!child4.is("[style]")) {
		child4.css("background", "#95A8E4");
	} else {
		child4.removeAttr("style");
	}
});

// ------------------------------------------------------
// 소스출력
// ------------------------------------------------------
var textSource = $("[name='_1q74-source']");
var exampleHtml = $("[name='_1q74-example-root']").html();
var specialCharLines = textSource.text(exampleHtml).html().split("\n");

textSource.html(specialCharLines.join("<br/>").replaceAll("\t", "&nbsp;&nbsp;"));
</script>
<style>
[name="_1q74-example-root"] {
	min-height: 170px;
}

[name="_1q74-example-1"] {
	min-height: 140px;
}

[name="_1q74-example-root"] [type="image"]{
	width: 100px;
}

[name="_1q74-example-1"] td {
	min-width: 100px;
	min-height: 30px;
}

[name|="_1q74-example"] button
,[name="_1q74-source"] button {
	background: lightgray;
	border: 5px outset;
	min-height: 35px;
}

[name|="_1q74-example"] button:active
,[name="_1q74-source"] button:active {
	border: 2px inset;
	min-height: 35px;
}
</style>

</body>
</html>

    4. File

    [javascript][jquery][selector]only-of-type.html
    0.00MB

    5. See also

    useversal-selector

    6. Reference

    https://api.jquery.com/only-of-type-selector/