Material-para-estudo-front-end:机电材料Para estudo前端组件

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  • 2022-06-06 12:29
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材料对雌激素前端 资料库的最前端内容:HTML,CSS,Bootstrap,Javascript,ES6 e PHP,可下载的内容
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<html xmlns="http://www.w3.org/1999/xhtml"><head><meta charset="utf-8"><meta name="generator" content="pdf2htmlEX"><meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1"><link rel="stylesheet" href="https://csdnimg.cn/release/download_crawler_static/css/base.min.css"><link rel="stylesheet" href="https://csdnimg.cn/release/download_crawler_static/css/fancy.min.css"><link rel="stylesheet" href="https://csdnimg.cn/release/download_crawler_static/15692472/raw.css"><script src="https://csdnimg.cn/release/download_crawler_static/js/compatibility.min.js"></script><script src="https://csdnimg.cn/release/download_crawler_static/js/pdf2htmlEX.min.js"></script><script>try{pdf2htmlEX.defaultViewer = new pdf2htmlEX.Viewer({});}catch(e){}</script><title></title></head><body><div id="sidebar" style="display: none"><div id="outline"></div></div><div id="pf1" class="pf w0 h0" data-page-no="1"><div class="pc pc1 w0 h0"><img class="bi x0 y0 w1 h1" alt="" src="https://csdnimg.cn/release/download_crawler_static/15692472/bg1.jpg"><div class="c x1 y1 w2 h2"><div class="t m0 x2 h3 y2 ff1 fs0 fc0 sc0 ls0 ws0">SELETO<span class="_ _0"></span>R<span class="_ _1"></span> </div></div><div class="c x3 y1 w3 h2"><div class="t m0 x2 h3 y2 ff1 fs0 fc0 sc0 ls0 ws0">SIGNIFICADO </div></div><div class="c x4 y1 w4 h2"><div class="t m0 x2 h3 y2 ff1 fs0 fc0 sc0 ls0 ws0">EXE<span class="_ _0"></span>MPLO<span class="_ _1"></span> </div></div><div class="c x1 y3 w2 h4"><div class="t m0 x2 h5 y4 ff2 fs0 fc1 sc0 ls0 ws0">Seletor universal </div></div><div class="c x3 y3 w3 h4"><div class="t m0 x2 h6 y5 ff2 fs1 fc0 sc0 ls0 ws0">Aplica-s<span class="_ _0"></span>e em todos os </div><div class="t m0 x2 h6 y6 ff2 fs1 fc0 sc0 ls0 ws0">elementos no documento </div></div><div class="c x4 y3 w4 h4"><div class="t m0 x2 h6 y5 ff2 fs1 fc2 sc0 ls0 ws0">*{} </div><div class="t m0 x2 h6 y6 ff2 fs1 fc0 sc0 ls0 ws0">Seleciona todos os<span class="_ _0"></span> elementos da </div><div class="t m0 x2 h6 y7 ff2 fs1 fc0 sc0 ls0 ws0">p&#225;gina </div></div><div class="c x1 y8 w2 h7"><div class="t m0 x2 h5 y9 ff2 fs0 fc1 sc0 ls0 ws0">Seletor de texto </div></div><div class="c x3 y8 w3 h7"><div class="t m0 x2 h6 ya ff2 fs1 fc0 sc0 ls0 ws0">Seleciona elementos pelo </div><div class="t m0 x2 h6 yb ff2 fs1 fc0 sc0 ls0 ws0">tipo </div></div><div class="c x4 y8 w4 h7"><div class="t m0 x2 h6 ya ff2 fs1 fc2 sc0 ls0 ws0">H1, h2<span class="_ _0"></span>, h3 {}<span class="_ _1"></span><span class="fc0"> </span></div><div class="t m0 x2 h6 yb ff2 fs1 fc0 sc0 ls0 ws0">Seleciona os elementos &lt;h1<span class="_ _0"></span>&gt;, &lt;h2&gt; e </div><div class="t m0 x2 h6 yc ff2 fs1 fc0 sc0 ls0 ws0">&lt;h3&gt; </div></div><div class="c x1 yd w2 h8"><div class="t m0 x2 h5 ye ff2 fs0 fc1 sc0 ls0 ws0">Seletor de classe </div></div><div class="c x3 yd w3 h8"><div class="t m0 x2 h6 yf ff2 fs1 fc0 sc0 ls0 ws0">Seleciona um elemento cujo </div><div class="t m0 x2 h6 y10 ff2 fs1 fc0 sc0 ls0 ws0">atributo class tem o valor<span class="_ _0"></span> </div><div class="t m0 x2 h6 y11 ff2 fs1 fc0 sc0 ls0 ws0">especificado depois<span class="_ _0"></span> do </div><div class="t m0 x2 h6 y12 ff2 fs1 fc0 sc0 ls0 ws0">ponto </div></div><div class="c x4 yd w4 h8"><div class="t m0 x2 h6 yf ff2 fs1 fc2 sc0 ls0 ws0">.verde{} </div><div class="t m0 x2 h6 y10 ff2 fs1 fc0 sc0 ls0 ws0">Seleciona qualquer<span class="_ _0"></span> elemento cujo </div><div class="t m0 x2 h6 y11 ff3 fs1 fc0 sc0 ls0 ws0">atributo class tem o valor<span class="_ _0"></span> &#8220;verde&#8221;<span class="_ _1"></span><span class="ff2"> </span></div><div class="t m0 x2 h6 y12 ff2 fs1 fc2 sc0 ls0 ws0">p.verde{} </div><div class="t m0 x2 h6 y13 ff2 fs1 fc0 sc0 ls0 ws0">Seleciona somente elemento &lt;p&gt; cujo </div><div class="t m0 x2 h6 y14 ff3 fs1 fc0 sc0 ls0 ws0">atributo class tem o valor<span class="_ _0"></span> &#8220;verde&#8221;<span class="_ _1"></span><span class="ff2"> </span></div></div><div class="c x1 y15 w2 h9"><div class="t m0 x2 h5 y16 ff2 fs0 fc1 sc0 ls0 ws0">Seletor de ID </div></div><div class="c x3 y15 w3 h9"><div class="t m0 x2 h6 y10 ff2 fs1 fc0 sc0 ls0 ws0">Seleciona um elemento cujo </div><div class="t m0 x2 h6 y17 ff2 fs1 fc0 sc0 ls0 ws0">atributo id tem o valor<span class="_ _0"></span> </div><div class="t m0 x2 h6 y5 ff2 fs1 fc0 sc0 ls0 ws0">especificado ap&#243;s o<span class="_ _0"></span> s&#237;mbolo </div><div class="t m0 x2 h6 y18 ff2 fs1 fc0 sc0 ls0 ws0">de cerquilha ou jogo da </div><div class="t m0 x2 h6 yc ff2 fs1 fc0 sc0 ls0 ws0">velha </div></div><div class="c x4 y15 w4 h9"><div class="t m0 x2 h6 y10 ff2 fs1 fc2 sc0 ls0 ws0">#cabecalho{} </div><div class="t m0 x2 h6 y17 ff2 fs1 fc0 sc0 ls0 ws0">Seleciona o elemento cujo atributo id </div><div class="t m0 x2 h6 y5 ff3 fs1 fc0 sc0 ls0 ws0">tem o valor &#8220;cabecalho&#8221;<span class="ff2"> </span></div></div><div class="c x1 y19 w2 ha"><div class="t m0 x2 h5 y16 ff2 fs0 fc1 sc0 ls0 ws0">Seletor de filho </div></div><div class="c x3 y19 w3 ha"><div class="t m0 x2 h6 y10 ff2 fs1 fc0 sc0 ls0 ws0">Seleciona um elemento que </div><div class="t m0 x2 h6 y17 ff2 fs1 fc0 sc0 ls0 ws0">&#233; filho di<span class="_ _0"></span>reto de out<span class="ls1">ro</span> </div></div><div class="c x4 y19 w4 ha"><div class="t m0 x2 h6 y10 ff2 fs1 fc2 sc0 ls0 ws0">li&gt;a {} </div><div class="t m0 x2 h6 y17 ff2 fs1 fc0 sc0 ls0 ws0">Seleciona quaisqu<span class="_ _0"></span>er elementos &lt;a&gt; </div><div class="t m0 x2 h6 y1a ff2 fs1 fc0 sc0 ls0 ws0">que s&#227;o fil<span class="_ _0"></span>hos de um elemento &lt;li&gt; </div><div class="t m0 x2 h6 y6 ff2 fs1 fc0 sc0 ls0 ws0">(mas n&#227;o<span class="_ _0"></span> outros elementos a na </div><div class="t m0 x2 h6 yc ff2 fs1 fc0 sc0 ls0 ws0">p&#225;gina) </div></div><div class="c x1 y1b w2 hb"><div class="t m0 x2 h5 y1c ff2 fs0 fc1 sc0 ls0 ws0">Seletor de </div><div class="t m0 x2 h5 y1d ff2 fs0 fc1 sc0 ls0 ws0">descendente </div></div><div class="c x3 y1b w3 hb"><div class="t m0 x2 h6 y1e ff2 fs1 fc0 sc0 ls0 ws0">Seleciona um elemento que </div><div class="t m0 x2 h6 y1f ff2 fs1 fc0 sc0 ls0 ws0">&#233; descendente de outro </div><div class="t m0 x2 h6 ya ff2 fs1 fc0 sc0 ls0 ws0">elemento especificado (e </div><div class="t m0 x2 h6 y18 ff2 fs1 fc0 sc0 ls0 ws0">n&#227;o apenas f<span class="_ _0"></span>ilho direto </div><div class="t m0 x2 h6 yc ff2 fs1 fc0 sc0 ls0 ws0">desse elemento) </div></div><div class="c x4 y1b w4 hb"><div class="t m0 x2 h6 y1e ff2 fs1 fc2 sc0 ls0 ws0">p a {} </div><div class="t m0 x2 h6 y1f ff2 fs1 fc0 sc0 ls0 ws0">Seleciona quaisqu<span class="_ _0"></span>er elementos &lt;a&gt; </div><div class="t m0 x2 h6 ya ff2 fs1 fc0 sc0 ls0 ws0">que residem dentr<span class="_ _0"></span>o de um elemento </div><div class="t m0 x2 h6 y18 ff2 fs1 fc0 sc0 ls0 ws0">&lt;p&gt;, mesmo e houver o<span class="_ _0"></span>utros </div><div class="t m0 x2 h6 yc ff2 fs1 fc0 sc0 ls0 ws0">elementos aninhado<span class="_ _0"></span>s entre eles<span class="_ _1"></span> </div></div><div class="c x1 y20 w2 hc"><div class="t m0 x2 h5 y21 ff2 fs0 fc1 sc0 ls0 ws0">Seletor de irm&#227;o </div><div class="t m0 x2 h5 y22 ff2 fs0 fc1 sc0 ls0 ws0">adjacent<span class="_ _0"></span>e<span class="_ _1"></span> </div></div><div class="c x3 y20 w3 hc"><div class="t m0 x2 h6 y23 ff2 fs1 fc0 sc0 ls0 ws0">Seleciona um elemento que </div><div class="t m0 x2 h6 ya ff2 fs1 fc0 sc0 ls0 ws0">&#233; o irm&#227;o pr<span class="_ _0"></span>&#243;ximo de outro </div></div><div class="c x4 y20 w4 hc"><div class="t m0 x2 h6 y23 ff2 fs1 fc2 sc0 ls0 ws0">h1+p {} </div><div class="t m0 x2 h6 ya ff2 fs1 fc0 sc0 ls0 ws0">Seleciona o prim<span class="_ _0"></span>eiro elemento &lt;p&gt; </div><div class="t m0 x2 h6 y18 ff2 fs1 fc0 sc0 ls0 ws0">depois de qualq<span class="_ _0"></span>uer elemento &lt;h1&gt; </div><div class="t m0 x2 h6 yc ff2 fs1 fc0 sc0 ls0 ws0">(mas n&#227;o<span class="_ _0"></span> outros elementos &lt;p&gt;)<span class="_ _1"></span> </div></div><div class="c x1 y24 w2 ha"><div class="t m0 x2 h5 y16 ff2 fs0 fc1 sc0 ls0 ws0">Seletor de irm&#227;o </div><div class="t m0 x2 h5 y25 ff2 fs0 fc1 sc0 ls0 ws0">geral </div></div><div class="c x3 y24 w3 ha"><div class="t m0 x2 h6 y10 ff2 fs1 fc0 sc0 ls0 ws0">Seleciona um elemento que </div><div class="t m0 x2 h6 y11 ff2 fs1 fc0 sc0 ls0 ws0">&#233; um irm&#227;o<span class="_ _0"></span> de outro, </div><div class="t m0 x2 h6 y1a ff2 fs1 fc0 sc0 ls0 ws0">embora ele n&#227;o pr<span class="_ _0"></span>ecise ser o </div><div class="t m0 x2 h6 y18 ff2 fs1 fc0 sc0 ls0 ws0">elemento diretamente </div><div class="t m0 x2 h6 yc ff2 fs1 fc0 sc0 ls0 ws0">precedente </div></div><div class="c x4 y24 w4 ha"><div class="t m0 x2 hd y10 ff2 fs1 fc2 sc0 ls2 ws0">h1<span class="ff4 ls0">~<span class="ff2">p {}<span class="ff5"> </span></span></span></div><div class="t m0 x2 h6 y11 ff2 fs1 fc0 sc0 ls0 ws0">Se houvesse dois<span class="_ _0"></span> elementos &lt;p&gt; que </div><div class="t m0 x2 h6 y1a ff2 fs1 fc0 sc0 ls0 ws0">foss<span class="_ _0"></span>em irm&#227;os de um elemento &lt;h1&gt;, </div><div class="t m0 x2 h6 y18 ff2 fs1 fc0 sc0 ls0 ws0">essa regra se ap<span class="_ _0"></span>licaria ao dois<span class="_ _1"></span> </div></div><div class="c x0 y26 w5 h0"><div class="t m0 x1 h5 y27 ff2 fs0 fc3 sc0 ls0 ws0"> </div></div></div><div class="pi" data-data='{"ctm":[1.611639,0.000000,0.000000,1.611639,0.000000,0.000000]}'></div></div></body></html>
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