Nessa terceira mat\u00e9ria vamos ver os Seletores de conte\u00fado.
\nPara todos os exemplos ser\u00e1 utilizado o mesmo c\u00f3digo JavaScript, variando apenas o c\u00f3digo para acessar o elemento. C\u00f3digo que se encontra na linha 5. Abaixo veja o c\u00f3digo completo.
\nPara disparar a a\u00e7\u00e3o usamos um bot\u00e3o.<\/p>\n
<script type="text\/javascript" src="..\/jquery-1.2.6.js"><\/script>\r\n<script type="text\/javascript">\r\n\t$(function(){\r\n \t\t$('button').click(function () {\r\n\t\t\t\/*linha dos exemplos*\/\r\n\t\t\t});\r\n\t\t});\r\n<\/script><\/pre>\n<\/p>\n
Seletores de conte\u00fado<\/h3>\nSeletor contains<\/h4>\n
Esse seletor \u00e9 exclusivo da biblioteca jQuery. Acessa o texto definido no par\u00e2metro.<\/p>\n
$('div:contains(jQuery)').css('text-decoration', 'underline');<\/pre>\n HTML<\/strong><\/p>\n<button type="button">Alterar<\/button>\r\n <div><p>Biblioteca jQuery<\/p><\/div>\r\n <div><p>div \u00e9 elemento de bloco<\/p><\/div>\r\n <div>Biblioteca jQuery \u00e9 \u00f3tima<\/div>\r\n<\/pre>\nAo disparar o evento o seletor acessa todos elementos div e procura o nome jQuery. No exemplo ser\u00e1 afetada a primeira linha, mesmo estando dentro do elemento p, pois \u00e9 descendente do elemento dv.
\nA terceira linha ser\u00e1 afetada tamb\u00e9m.<\/p>\n
OBS: O seletor \u00e9 case sensitive, ou seja, tem diferen\u00e7a entre letras mai\u00fasculas e min\u00fasculas.<\/div>\nSeletor empty<\/h4>\n
Acessa todos elementos que n\u00e3o tenham conte\u00fados.<\/p>\n
$('td:empty').text('Estava vazia') .css('background', 'red');<\/pre>\nHTML<\/strong><\/p>\n<button type="button">Vermelha<\/button>\r\n\t <table border="1">\r\n <tr>\r\n \t<td>Com conte\u00fado<\/td><td><\/td>\r\n <\/tr>\r\n <tr>\r\n \t<td>Com conte\u00fado<\/td><td><\/td>\r\n <\/tr>\r\n <tr>\r\n\t<td><\/td><td>Com conte\u00fado<\/td>\r\n <\/tr>\r\n <\/table>\r\n<\/pre>\nNo exemplo acima o seletor procura as c\u00e9lulas vazias e escreve o texto \u201cEstava vazia\u201d.<\/p>\n
Seletor parent<\/h4>\n
Seletor exclusivo da biblioteca. Acessa todas as ocorr\u00eancias de elementos que sejam elementos pais de outros elementos e at\u00e9 texto.<\/p>\n
$('p:parent').css('background', 'red');<\/pre>\nHTML<\/strong><\/p>\n<button type="button">Vermelha<\/button>\r\n\t<p>Texto do primeiro par\u00e1grafo<\/p>\r\n\t<p><\/p>\r\n\t<p>Texto do <b>Terceiro<\/b>par\u00e1grafo<\/p>\r\n<\/pre>\nNesse caso ser\u00e1 alvo o primeiro e o terceiro par\u00e1grafo. O Segundo n\u00e3o ser\u00e1 alvo pois n\u00e3o tem conte\u00fado.<\/p>\n
Seletor has<\/h4>\n
Exclusivo da biblioteca. Acessa elementos que contenham pelo menos um elemento que coincide com o especificado no seletor.<\/p>\n
$(\u2018div:has(p)\u2019).css('background','yellow');<\/pre>\nHTML<\/strong><\/p>\n<div><p>Ol\u00e1! Aqui \u00e9 um par\u00e1grafo<\/p><\/div>\r\n <div>Ol\u00e1! Aqui \u00e9 outro par\u00e1grafo<\/div>\r\n<\/pre>\nA div que contem o elemento p \u00e9 afetada, j\u00e1 que possui ao menos um elemento p dentro da div.<\/p>\n","protected":false},"excerpt":{"rendered":"
Nessa terceira mat\u00e9ria vamos ver os Seletores de conte\u00fado. Para todos os exemplos ser\u00e1 utilizado o mesmo c\u00f3digo JavaScript, variando apenas o c\u00f3digo para acessar o elemento. C\u00f3digo que se encontra na linha 5. Abaixo veja o c\u00f3digo completo. Para disparar a a\u00e7\u00e3o usamos um bot\u00e3o. <script type="text\/javascript" src="..\/jquery-1.2.6.js"><\/script> <script type="text\/javascript"> $(function(){ $('button').click(function () { […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[],"class_list":["post-139","post","type-post","status-publish","format-standard","hentry","category-jquery"],"yoast_head":"\n
Seletores jQuery \u2013 parte III<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.kadunew.com\/blog\/jquery\/seletores-jquery-\u2013-parte-iii\" \/>\n<meta property=\"og:locale\" content=\"pt_BR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Seletores jQuery \u2013 parte III\" \/>\n<meta property=\"og:description\" content=\"Nessa terceira mat\u00e9ria vamos ver os Seletores de conte\u00fado. Para todos os exemplos ser\u00e1 utilizado o mesmo c\u00f3digo JavaScript, variando apenas o c\u00f3digo para acessar o elemento. C\u00f3digo que se encontra na linha 5. Abaixo veja o c\u00f3digo completo. Para disparar a a\u00e7\u00e3o usamos um bot\u00e3o. <script type="text\/javascript" src="..\/jquery-1.2.6.js"><\/script> <script type="text\/javascript"> $(function(){ $('button').click(function () { […]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.kadunew.com\/blog\/jquery\/seletores-jquery-\u2013-parte-iii\" \/>\n<meta property=\"og:site_name\" content=\"KADUNEW\" \/>\n<meta property=\"article:published_time\" content=\"2009-01-01T19:04:49+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2013-11-26T12:47:12+00:00\" \/>\n<meta name=\"author\" content=\"Kadu Oliveira\" \/>\n<meta name=\"twitter:label1\" content=\"Escrito por\" \/>\n\t<meta name=\"twitter:data1\" content=\"Kadu Oliveira\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. tempo de leitura\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 minutos\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.kadunew.com\/blog\/jquery\/seletores-jquery-%e2%80%93-parte-iii\",\"url\":\"https:\/\/www.kadunew.com\/blog\/jquery\/seletores-jquery-%e2%80%93-parte-iii\",\"name\":\"Seletores jQuery \u2013 parte III\",\"isPartOf\":{\"@id\":\"https:\/\/www.kadunew.com\/blog\/#website\"},\"datePublished\":\"2009-01-01T19:04:49+00:00\",\"dateModified\":\"2013-11-26T12:47:12+00:00\",\"author\":{\"@id\":\"https:\/\/www.kadunew.com\/blog\/#\/schema\/person\/07b2297c4825efbd1e9f2a1018926b05\"},\"breadcrumb\":{\"@id\":\"https:\/\/www.kadunew.com\/blog\/jquery\/seletores-jquery-%e2%80%93-parte-iii#breadcrumb\"},\"inLanguage\":\"pt-BR\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/www.kadunew.com\/blog\/jquery\/seletores-jquery-%e2%80%93-parte-iii\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/www.kadunew.com\/blog\/jquery\/seletores-jquery-%e2%80%93-parte-iii#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/www.kadunew.com\/blog\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"JS\/jQuery\",\"item\":\"https:\/\/www.kadunew.com\/blog\/category\/jquery\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"Seletores jQuery \u2013 parte III\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/www.kadunew.com\/blog\/#website\",\"url\":\"https:\/\/www.kadunew.com\/blog\/\",\"name\":\"KADUNEW\",\"description\":\"Artigos sobre Front-End e Programa\u00e7\u00e3o web\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/www.kadunew.com\/blog\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"pt-BR\"},{\"@type\":\"Person\",\"@id\":\"https:\/\/www.kadunew.com\/blog\/#\/schema\/person\/07b2297c4825efbd1e9f2a1018926b05\",\"name\":\"Kadu Oliveira\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"pt-BR\",\"@id\":\"https:\/\/www.kadunew.com\/blog\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/secure.gravatar.com\/avatar\/780660fded589936b30467c54c99d51a?s=96&r=g\",\"contentUrl\":\"https:\/\/secure.gravatar.com\/avatar\/780660fded589936b30467c54c99d51a?s=96&r=g\",\"caption\":\"Kadu Oliveira\"},\"sameAs\":[\"https:\/\/www.kadunew.com\/blog\"],\"url\":\"https:\/\/www.kadunew.com\/blog\/author\/admin\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Seletores jQuery \u2013 parte III","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.kadunew.com\/blog\/jquery\/seletores-jquery-\u2013-parte-iii","og_locale":"pt_BR","og_type":"article","og_title":"Seletores jQuery \u2013 parte III","og_description":"Nessa terceira mat\u00e9ria vamos ver os Seletores de conte\u00fado. Para todos os exemplos ser\u00e1 utilizado o mesmo c\u00f3digo JavaScript, variando apenas o c\u00f3digo para acessar o elemento. C\u00f3digo que se encontra na linha 5. Abaixo veja o c\u00f3digo completo. 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