{"id":1062,"date":"2012-12-15T19:33:21","date_gmt":"2012-12-15T17:33:21","guid":{"rendered":"http:\/\/elnostreraco.com\/blog\/?p=1062"},"modified":"2015-11-10T21:36:59","modified_gmt":"2015-11-10T19:36:59","slug":"coneixements-basics-html-per-tot-usuari-dinternet","status":"publish","type":"post","link":"https:\/\/elnostreraco.com\/blog\/coneixements-basics-html-per-tot-usuari-dinternet\/","title":{"rendered":"Coneixements b\u00e0sics d&#8217;HTML per a tot usuari d&#8217;Internet"},"content":{"rendered":"<p><strong><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" class=\"alignleft size-thumbnail wp-image-1099\" src=\"https:\/\/i0.wp.com\/elnostreraco.com\/blog\/wp-content\/uploads\/html-for-babies-150x150.jpg?resize=150%2C150\" alt=\"html-for-babies\" width=\"150\" height=\"150\" \/>Tothom hauria de saber HTML a nivell b\u00e0sic.<\/strong>\u00a0Si no saps HTML continua llegint, i si ja en saps pots compartir-ho o guardar-ho a favorits.<\/p>\n<p>El meu objectiu \u00e9s que <strong>amb menys d&#8217;una hora<\/strong> tinguis coneixements\u00a0b\u00e0sics de HTML, el\u00a0llenguatge\u00a0utilitzat per escriure tots els continguts de les p\u00e0gines web.<\/p>\n<h2>Qu\u00e8 \u00e9s aix\u00f2 del HTML?<\/h2>\n<p>HTML significa \u00abllenguatge d&#8217;etiquetes d&#8217;hipertext\u00bb i \u00e9s el llenguatge que s&#8217;utilitza per definir l&#8217;estructura i el contingut de les p\u00e0gines web.\u00a0Aix\u00f2 vol dir que<strong> totes les\u00a0p\u00e0gines web estan creades utilitzant etiquetes d&#8217;elements HTML.\u00a0<\/strong><\/p>\n<p>Els navegadors s\u00f3n els programes amb els que navegues per Internet i que interpreten el codi HTML de les p\u00e0gines web. Ara mateix podries estar utilitzant Internet Explorer, Google Chrome o Mozilla Firefox, oi?<\/p>\n<p>La manera m\u00e9s r\u00e0pida de veure el HTML que forma una p\u00e0gina web en aquests navegadors\u00a0\u00e9s <strong>mirar el codi\u00a0polsant\u00a0la tecla F12<\/strong>. Aix\u00f2 et permet veure immediatament els elements HTML de la p\u00e0gina que est\u00e0s visualitzant.<\/p>\n<p>Cada etiqueta del llenguatge HTML est\u00e0 formada pels\u00a0car\u00e0cters\u00a0&lt;, &gt; i \/. Un element HTML pot contenir altres elements HTML.<\/p>\n<p>Els elements HTML comencen per una etiqueta amb el car\u00e0cter inicial &lt; i amb el car\u00e0cter final &gt;. Les etiquetes de finalitzaci\u00f3 acaben amb etiqueta amb els\u00a0car\u00e0cters inicials &lt;\/ i el car\u00e0cter final \u00a0&gt;.<\/p>\n<p>Per exemple, pel titular m\u00e9s important de la p\u00e0gina s&#8217;utilitza el seg\u00fcent codi:<br \/>\n&lt;h1&gt;Titular de la p\u00e0gina&lt;\/h1&gt;.<\/p>\n<p>Hi ha elements com les imatges a les que no els hi cal indicar contingut entre les etiquetes inicials i finals. En aquest cas s&#8217;escriuria el seg\u00fcent:<br \/>\n&lt;img alt=\u00bbAix\u00f2 \u00e9s una imatge\u00bb src=\u00bbimatge.jpg\u00bb \/&gt;<\/p>\n<p>Cada element t\u00e9 atributs que defineixen les\u00a0caracter\u00edstiques\u00a0del contingut. En el cas anterior, l&#8217;atribut \u00abalt\u00bb s&#8217;utilitza per escriure un text que descriu la imatge i l&#8217;atribut \u00absrc\u00bb s&#8217;utilitza per indicar la ubicaci\u00f3 del fitxer de la imatge.<\/p>\n<p>Com hem vist en l&#8217;exemple anterior, els atributs es defineixen a partir del nom i de l&#8217;assignaci\u00f3 del seu valor. S&#8217;utilitza el s\u00edmbol = i es posa el valor entre cometes. Per exemple src=\u00bbimatge.jpg\u00bb.<\/p>\n<p>Resumint, l&#8217;estructura d&#8217;un element HTML \u00e9s la\u00a0seg\u00fcent:<br \/>\n&lt;etiqueta atribut=\u00bbvalor de l&#8217;atribut\u00bb&gt;Contingut de l&#8217;element&lt;\/etiqueta&gt;<br \/>\no<br \/>\n&lt;etiqueta atribut=\u00bbvalor de l&#8217;atribut\u00bb \/&gt;<\/p>\n<p>Alguns exemples:<\/p>\n<pre>&lt;h1&gt;Coneixements b\u00e0sics d'HTML per a tot usuari d'Internet&lt;\/h1&gt;\r\n&lt;p&gt;&lt;strong&gt;Tothom hauria de saber HTML a nivell b\u00e0sic.&lt;\/strong&gt;\u00a0Si no saps HTML continua llegint, i si ja en saps pots compartir-ho o guardar-ho a favorits.&lt;\/p&gt;\r\n&lt;a href=\"http:\/\/elnostreraco.com\/blog\/coneixements-basics-html-per-tot-usuari-dinternet\/&gt;Enlla\u00e7 a aquest article&lt;\/a&gt;\r\n&lt;img alt=\"Imatge del logo de HTML5 d'aquest article\" src=\"http:\/\/elnostreraco.com\/blog\/wp-content\/uploads\/HTML5.png\" \/&gt;<\/pre>\n<h2>Crea la teva primera p\u00e0gina web amb un fitxer HTML<\/h2>\n<p>1. <strong>Obre un editor de textos.<\/strong> En aquest exemple utilitzar\u00e9 el bloc de notes, pero jo et recomanaria instal\u00b7lar-te l&#8217;\u00faltima versi\u00f3 de\u00a0<a href=\"http:\/\/notepad-plus-plus.org\/download\/all-versions.html\">notepad++<\/a> (Tamb\u00e9 hi ha <a href=\"http:\/\/www.barebones.com\/products\/textwrangler\/download.html\">TextWrangler<\/a> per Mac o <em>gedit<\/em> per Linux).<\/p>\n<p style=\"text-align: center;\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" class=\"wp-image-1066 aligncenter\" style=\"color: #333333; font-style: normal; line-height: 24px; margin-top: 0.4em;\" src=\"https:\/\/i0.wp.com\/elnostreraco.com\/blog\/wp-content\/uploads\/notepad.jpg?resize=148%2C253\" alt=\"notepad\" width=\"148\" height=\"253\" \/><\/p>\n<p>2. <strong>Copia aquesta estructura b\u00e0sica i enganxa-la en un nou fitxer<\/strong>. <em>Consisteix en seleccionar el text que apareix a continuaci\u00f3, polsar\u00a0CONTROL C i despr\u00e9s, un cop al editor de textos, CONTROL V.<\/em><\/p>\n<pre>&lt;!doctype html&gt;\r\n&lt;html lang=\"ca\"&gt;\r\n&lt;head&gt;\r\n  &lt;title&gt;T\u00edtol que apareix als buscadors i favorits&lt;\/title&gt;\r\n&lt;\/head&gt;\r\n&lt;body&gt;\r\n  &lt;h1&gt;Titular de la p\u00e0gina&lt;\/h1&gt;\r\n  &lt;p&gt;Par\u00e0graf de text i una &lt;strong&gt;text destacat&lt;\/strong&gt;&lt;\/p&gt;\r\n  &lt;img alt=\"Aix\u00f2 \u00e9s una imatge\" src=\"imatge.jpg\" \/&gt;\r\n  &lt;ul&gt; \r\n    &lt;li&gt;Primer element d'un llistat&lt;\/li&gt;\r\n    &lt;li&gt;Segon element d'un llistat amb un &lt;a href=\"http:\/\/elnostreraco.com\/blog\/\"&gt;enlla\u00e7&lt;\/a&gt;&lt;\/li&gt;\r\n  &lt;\/ul&gt;\r\n&lt;\/body&gt;\r\n&lt;\/html&gt;<\/pre>\n<p>3. <strong>Guarda el fitxer amb l&#8217;extensi\u00f3 .html i amb codificaci\u00f3 UTF-8.<\/strong>\u00a0<em>Si ho fas amb el programa del bloc de notes des de Windows vigila de no guardar-lo com a fitxer de text i no utilitzis la codificaci\u00f3 ANSI. En aquest cas ho guardo a\u00a0l&#8217;escriptori.<\/em><\/p>\n<p><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-1071\" style=\"color: #333333; font-style: normal; line-height: 24px;\" src=\"https:\/\/i0.wp.com\/elnostreraco.com\/blog\/wp-content\/uploads\/guardar-html4.jpg?resize=683%2C488\" alt=\"guardar-html\" width=\"683\" height=\"488\" \/><\/p>\n<p>A l&#8217;escriptori hauries de veure el fitxer que acabes de guardar.<\/p>\n<p><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" src=\"https:\/\/i0.wp.com\/elnostreraco.com\/blog\/wp-content\/uploads\/indexhtml-chrome.jpg?resize=121%2C114\" alt=\"indexhtml-chrome\" width=\"121\" height=\"114\" \/><\/p>\n<p>4. <strong>Com que el fitxer &#8216;imatge.jpg&#8217; no\u00a0existeix, guarda un imatge (l&#8217;anterior o qualsevol altre) a l&#8217;escriptori\u00a0amb el nom imatge.jpg.<\/strong><\/p>\n<p><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" src=\"https:\/\/i0.wp.com\/elnostreraco.com\/blog\/wp-content\/uploads\/guardar-imatge.jpg?resize=371%2C152\" alt=\"guardar-imatge\" width=\"371\" height=\"152\" \/><\/p>\n<p>5. <strong>Obre el fitxer HTML fent doble clic sobre l&#8217;icona del nou fitxer que apareix a l&#8217;escriptori.<\/strong> En aquest cas, com que jo tinc Google Chrome instal\u00b7lat per defecte, se m&#8217;obrir\u00e0 amb Google Chrome.\u00a0Depenent de la configuraci\u00f3 del teu ordinador, podria tenir una\u00a0icona\u00a0diferent i se&#8217;t podria obrir amb el navegador Mozilla Firefox o Internet Explorer, etc.<\/p>\n<p>Hauries de tenir un resultat similar a aquest:<\/p>\n<p><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-1076\" src=\"https:\/\/i0.wp.com\/elnostreraco.com\/blog\/wp-content\/uploads\/exemple-pagina-html.jpg?resize=323%2C290\" alt=\"exemple-pagina-html\" width=\"323\" height=\"290\" \/><\/p>\n<h2>Qu\u00e8 hauries d&#8217;haver apr\u00e8s sobre el llenguatge HTML?<\/h2>\n<p>Aquestes serien les coses b\u00e0siques que hauries d&#8217;haver apr\u00e8s un cop llegit aquest article:<\/p>\n<ul>\n<li>Les p\u00e0gines web estan\u00a0constru\u00efdes\u00a0utilitzant el llenguatge HTML i el llenguatge HTML est\u00e0 format per\u00a0etiquetes.\u00a0<strong>Amb la tecla F12 pots veure els elements HTML\u00a0<\/strong>de qualsevol p\u00e0gina web.<\/li>\n<li><strong>Les etiquetes m\u00e9s b\u00e0siques<\/strong> s\u00f3n:<br \/>\n&lt;h1&gt; pels titulars (h2, h3, etc indiquen la\u00a0import\u00e0ncia\u00a0de cada subapartat)<br \/>\n&lt;p&gt; pels par\u00e0grafs.<br \/>\n&lt;strong&gt; pels textos destacats.<br \/>\n&lt;img src=\u00bb<em>URL<\/em>\u00ab&gt; per les imatges.<br \/>\n&lt;a href=\u00bb<em>URL<\/em>\u00ab&gt; pels enlla\u00e7os.<br \/>\n&lt;ul&gt; pels llistats.<br \/>\n&lt;li&gt; pels elements dels llistats.<\/li>\n<li><strong>Les URL identifiquen les p\u00e0gines i els fitxers.<\/strong> Les imatges (img src) necessiten una <em>URL<\/em> poder accedir als fitxers de les imatges i els\u00a0enlla\u00e7os (a href) necessiten una p\u00e0gina per poder dirigir l&#8217;usuari cap a una nova p\u00e0gina.<br \/>\nLes rutes absolutes com &lt;img src=\u00bbhttp:\/\/elnostreraco.com\/blog\/wp-content\/uploads\/exemple-pagina-html.jpg\u00bb&gt; poden funcionar millor que les rutes relatives com &lt;img src=\u00bbexemple-pagina-html.jpg\u00bb&gt;. Per exemple, millor enlla\u00e7ar a &lt;a href=\u00bbhttp:\/\/elnostreraco.com\/blog\/calendari-sexy-2013\/&gt;Calendari 2013&lt;\/a&gt; en comptes de\u00a0&lt;a href=\u00bbcalendari-sexy-2013\/\u00bb&gt;Calendari 2013&lt;\/a&gt;.<\/li>\n<li><strong>El llenguatge CSS s&#8217;utilitza per canviar l&#8217;aspecte <\/strong>d&#8217;una p\u00e0gina web (colors, disposici\u00f3, tipografia, etc)<\/li>\n<li><strong>El llenguatge JavaScript s&#8217;utilitza per canviar el comportament<\/strong> d&#8217;una p\u00e0gina web (formularis, animacions, aplicacions, etc)<\/li>\n<\/ul>\n<h2>Truc extra:<\/h2>\n<p>Molts serveis a Internet et deixen inserir el seu contingut a les teves p\u00e0gines web. De vegades nom\u00e9s es tracta de copiar el codi HTML\u00a0que et doneen youtube, facebook, twitter, etc i enganxar-lo a la teva p\u00e0gina web.<\/p>\n<h3><strong>Exemple: Inserir un v\u00eddeo de Youtube:<\/strong><\/h3>\n<p>1. Ves al v\u00eddeo que vulguis i copia el codi HTML que haur\u00e0s d&#8217;inserir a la teva p\u00e0gina.<\/p>\n<p><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-medium wp-image-1077\" src=\"https:\/\/i0.wp.com\/elnostreraco.com\/blog\/wp-content\/uploads\/youtube-300x221.jpg?resize=300%2C221\" alt=\"youtube\" width=\"300\" height=\"221\" \/><\/p>\n<p>2. Enganxa&#8217;l a la teva p\u00e0gina. En aquest cas, al fitxer index.html<\/p>\n<pre>&lt;!doctype html&gt;\r\n&lt;html lang=\"ca\"&gt;\r\n&lt;head&gt;\r\n  &lt;title&gt;T\u00edtol que apareix als buscadors i favorits&lt;\/title&gt;\r\n&lt;\/head&gt;\r\n&lt;body&gt;\r\n  &lt;h1&gt;Titular de la p\u00e0gina&lt;\/h1&gt;\r\n  &lt;p&gt;Par\u00e0graf de text i una &lt;strong&gt;text destacat&lt;\/strong&gt;&lt;\/p&gt;\r\n  &lt;img alt=\"Aix\u00f2 \u00e9s una imatge\" src=\"imatge.jpg\" \/&gt;\r\n  &lt;ul&gt; \r\n    &lt;li&gt;Primer element d'un llistat&lt;\/li&gt;\r\n    &lt;li&gt;Segon element d'un llistat amb un &lt;a href=\"http:\/\/elnostreraco.com\/blog\/\"&gt;enlla\u00e7&lt;\/a&gt;&lt;\/li&gt;\r\n  &lt;\/ul&gt;\r\n<strong>&lt;iframe width=\"420\" height=\"315\" src=\"http:\/\/www.youtube.com\/embed\/Jzm-ZOCCxRE\" frameborder=\"0\" allowfullscreen&gt;&lt;\/iframe&gt;<\/strong>\r\n&lt;\/body&gt;\r\n&lt;\/html&gt;<\/pre>\n<p>3. Visualitza el contingut actualitzant la p\u00e0gina.<\/p>\n<p><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-medium wp-image-1079\" src=\"https:\/\/i0.wp.com\/elnostreraco.com\/blog\/wp-content\/uploads\/resultat-youtube-300x221.jpg?resize=300%2C221\" alt=\"resultat-youtube\" width=\"300\" height=\"221\" \/><\/p>\n<p><strong>Comentaris:<\/strong>\u00a0Creieu que es pot\u00a0exigir com a m\u00ednims de prim\u00e0ria\u00a0el que he exposat aqu\u00ed o s\u00f3c massa dr\u00e0stic? Tenir un\u00a0ebook gratu\u00eft en catal\u00e0 sobre HTML i CSS hi ajudaria?<\/p>\n<p>&nbsp;<\/p>\n<p><strong>Actualitzaci\u00f3 11\/03\/2013<\/strong>: Un campanya publicitaria per a que s&#8217;ensenyi a programar a les escoles.<\/p>\n<p><iframe loading=\"lazy\" src=\"http:\/\/www.youtube.com\/embed\/dU1xS07N-FA\" width=\"560\" height=\"315\" frameborder=\"0\" allowfullscreen=\"allowfullscreen\"><\/iframe><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tothom hauria de saber HTML a nivell b\u00e0sic.\u00a0Si no saps HTML continua llegint, i si ja en saps pots compartir-ho o guardar-ho a favorits. El meu objectiu \u00e9s que amb menys d&#8217;una hora tinguis coneixements\u00a0b\u00e0sics &hellip; <\/p>\n","protected":false},"author":1,"featured_media":1099,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","jetpack_post_was_ever_published":false},"categories":[16],"tags":[],"class_list":["post-1062","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-ux"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.6 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Coneixements b\u00e0sics d&#039;HTML per a tot usuari d&#039;Internet ~ Experi\u00e8ncia d&#039;usuari<\/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:\/\/elnostreraco.com\/blog\/coneixements-basics-html-per-tot-usuari-dinternet\/\" \/>\n<meta property=\"og:locale\" content=\"ca_ES\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Coneixements b\u00e0sics d&#039;HTML per a tot usuari d&#039;Internet ~ Experi\u00e8ncia d&#039;usuari\" \/>\n<meta property=\"og:description\" content=\"Tothom hauria de saber HTML a nivell b\u00e0sic.\u00a0Si no saps HTML continua llegint, i si ja en saps pots compartir-ho o guardar-ho a favorits. 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