添加元素
.append(content[,content]) / .append(function(index,html))
Insert content, specified by the parameter, to the end of each element in the set of matched elements.
可以一次添加多個(gè)內(nèi)容,內(nèi)容可以是
DOM對(duì)象
、HTML string
、jQuery對(duì)象
如果參數(shù)是
function
,function可以返回DOM對(duì)象、HTML string、 jQuery對(duì)象,參數(shù)是集合中的元素位置與原來(lái)的html值
看幾個(gè)例子
$( ".inner" ).append( "<p>Test</p>" );
$( "body" ).append( $newdiv1, [ newdiv2, existingdiv1 ] );
$( "p" ).append( "<strong>Hello</strong>" );
$( "p" ).append( $( "strong" ) );
$( "p" ).append( document.createTextNode( "Hello" ) );
.appendTo(target)
把對(duì)象插入到目標(biāo)元素尾部,目標(biāo)元素可以是selector
, DOM對(duì)象
, HTML string
, 元素集合
, jQuery對(duì)象
;
Insert every element in the set of matched elements to the end of the target.
$( "h2" ).appendTo( $( ".container" ) );
$( "<p>Test</p>" ).appendTo( ".inner" );
.prepend(content[,content]) / .prepend(function(index,html))
向?qū)ο箢^部追加內(nèi)容,用法和append類似,內(nèi)容添加到最開(kāi)始
Insert content, specified by the parameter, to the beginning of each element in the set of matched elements.
$( ".inner" ).prepend( "<p>Test</p>" );
.prependTo(target)
把對(duì)象插入到目標(biāo)元素頭部,用法和prepend類似
Insert every element in the set of matched elements to the beginning of the target.
$( "<p>Test</p>" ).prependTo( ".inner" );
.before([content][,content]) / .before(function)
在對(duì)象前面(不是頭部,而是外面,和對(duì)象并列同級(jí))插入內(nèi)容,參數(shù)和append類似
Insert content, specified by the parameter, before each element in the set of matched elements.
$( ".inner" ).before( "<p>Test</p>" );
$( ".container" ).before( $( "h2" ) );
$( "p" ).first().before( newdiv1, [ newdiv2, existingdiv1 ] );
$( "p" ).before( "<b>Hello</b>" );
$( "p" ).before( document.createTextNode( "Hello" ) );
.insertBefore(target)
把對(duì)象插入到target之前(同樣不是頭部,是同級(jí))
Insert every element in the set of matched elements before the target.
$( "h2" ).insertBefore( $( ".container" ) );
.after([content][,content]) / .after(function(index))
和before相反,在對(duì)象后面(不是尾部,而是外面,和對(duì)象并列同級(jí))插入內(nèi)容,參數(shù)和append類似
Insert content, specified by the parameter, after each element in the set of matched elements.
$( ".inner" ).after( "<p>Test</p>" );
$( "p" ).after( document.createTextNode( "Hello" ) );
.insertAfter(target)
和insertBefore相反,把對(duì)象插入到target之后(同樣不是尾部,是同級(jí))
Insert every element in the set of matched elements after the target.
$( "<p>Test</p>" ).insertAfter( ".inner" );
$( "p" ).insertAfter( "#foo" );
刪除元素
.remove([selector])
刪除被選元素(及其子元素)
$("#div1").remove();
我們也可以添加一個(gè)可選的選擇器參數(shù)來(lái)過(guò)濾匹配的元素
$('div').remove('.test');
.empty()
清空被選擇元素內(nèi)所有子元素
Remove all child nodes of the set of matched elements from the DOM.
$('body').empty();
.detach()
.detach() 方法和.remove()一樣, 除了 .detach()保存所有jQuery數(shù)據(jù)和被移走的元素相關(guān)聯(lián)。當(dāng)需要移走一個(gè)元素,不久又將該元素插入DOM時(shí),這種方法很有用。
包裹元素
wrap(wrappingElement) / .wrap(function(index))
為每個(gè)對(duì)象包裹一層HTML結(jié)構(gòu),可以是selector, element, HTML string, jQuery object
Wrap an HTML structure around each element in the set of matched elements.
<div class="container">
<div class="inner">Hello</div>
<div class="inner">Goodbye</div>
</div>
包裹元素
$( ".inner" ).wrap( "<div class='new'></div>" );
看看結(jié)果
<div class="container">
<div class="new">
<div class="inner">Hello</div>
</div>
<div class="new">
<div class="inner">Goodbye</div>
</div>
</div>
.wrapAll(wrappingElement)
把所有匹配對(duì)象包裹在同一個(gè)HTML結(jié)構(gòu)中
Wrap an HTML structure around all elements in the set of matched elements.
<div class="container">
<div class="inner">Hello</div>
<div class="inner">Goodbye</div>
</div>
包裹元素
$( ".inner" ).wrapAll( "<div class='new' />");
看看結(jié)果
<div class="container">
<div class="new">
<div class="inner">Hello</div>
<div class="inner">Goodbye</div>
</div>
</div>
.wrapInner(wrappingElement) / .wrapInner(function(index))
包裹匹配元素內(nèi)容,這個(gè)不好描述,一看例子就懂
Wrap an HTML structure around the content of each element in the set of matched elements.
<div class="container">
<div class="inner">Hello</div>
<div class="inner">Goodbye</div>
</div>
包裹元素
$( ".inner" ).wrapInner( "<div class='new'></div>");
執(zhí)行結(jié)果
<div class="container">
<div class="inner">
<div class="new">Hello</div>
</div>
<div class="inner">
<div class="new">Goodbye</div>
</div>
</div>
.unwrap()
把DOM元素的parent移除
Remove the parents of the set of matched elements from the DOM, leaving the matched elements in their place.
pTags = $( "p" ).unwrap();
html([string])
這是一個(gè)讀寫兩用的方法,用于獲取/修改元素的innerHTML
- 當(dāng)沒(méi)有傳遞參數(shù)的時(shí)候,返回元素的
innerHTML
- 當(dāng)傳遞了一個(gè)string參數(shù)的時(shí)候,修改元素的innerHTML為參數(shù)值
看個(gè)例子
$('div').html()
$('div').html('123')
后續(xù)這種讀寫兩用的方法很多,原理都類似
- 如果結(jié)果是多個(gè)進(jìn)行賦值操作的時(shí)候會(huì)給每個(gè)結(jié)果都賦值
- 如果結(jié)果多個(gè),獲取值的時(shí)候,返回結(jié)果集中的第一個(gè)對(duì)象的相應(yīng)值
text()
和html
方法類似,操作的是DOM的innerText
值