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CSS

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E semanse topothetetheke stis 23/12/2016.
Logotupo tes CSS

E CSS (Cascading Style Sheets - diadokhika phulla uphous e epallela phulla uphous) einai mia glossa upologiste pou anekei sten kategoria ton glosson phullon uphous pou khresimopoieitai gia ton elegkho tes emphanises enos eggraphou pou ekhei graphtei me mia glossa semanses.[1] Khresimopoieitai delade gia ton elegkho tes emphanises enos eggraphou pou graphteke stis glosses HTML kai XHTML, delade gia ton elegkho tes emphanises mias istoselidas kai genikotera enos istotopou. E CSS einai mia glossa upologiste proorismene na anaptussei stulistika mia istoselida delade na diamorphonei perissotera kharakteristika, khromata, stoikhise kai dinei perissoteres dunatotetes se skhese me ten html.


<html>
<head>
<meta charset="utf-8">
<style>
#xyz { color: black; }
style>
head>
<body>
<p id="xyz" style="font-weight:bold">To keimeno pou morphopoietheke einai auto.p>
body>
html>

Sto paradeigma, paristatai mia protase e opoia ekhei mauro khroma kai entonous kharakteres.

E alleloukhia epharmoges ton phullon uphous

[Epexergasia | epexergasia kodika]

Gia ena eggrapho p.kh. html tha uparkhoun parapano apo ena phulla uphous ta opoia periekhoun deloseis gia ten emphanise enos sugkekrimenou stoikheiou. To phullo uphous pou epharmozetai se ena eggrapho mporei na proerkhetai apo:

  • to suggraphea mias istoselidas
  • to khreste tou ploegou
  • ton idio ton ploego, an ekhei to diko tou prokathorismeno phullo uphous.

Sunepos gia ena xhtml stoikheio tha uparkhoun parapano apo mia deloseis pou pithanon na einai sugkrouomenes. To protupo css gia na epilusei paromoies sugkrouseis ekhei kathorisei mia alleloukhia - seira - sten opoia tha mpoun autes oi deloseis kai me base ten opoia tha epilegei p.kh. e delose pou einai prote ste seira.

O algorithmos demiourgias autes tes alleloukhias - seiras - einai o akolouthos:

  1. Bres oles tis deloseis pou epharmozontai sto stoikheio pou mas endiapherei. Oi deloseis epharmozontai sto stoikheio an o epilogeas tou to epilexei (tairiazei me auto).
  2. Taxinomese me base te semasia (kanonike e semantike) kai proeleuse (suggrapheas, khreste e ploegos khreste). Me auxousa seira proteraiotetas:
    1. Deloseis ploegou khreste
    2. Kanonikes deloseis khreste
    3. Kanonikes deloseis suggraphea
    4. Semantikes deloseis suggraphea
    5. Semantikes deloseis khreste
  3. Taxinomese tis deloseis idias semasias kai proeleuses me kriterio ten exeidikeuse tou epilogea: oi pio exeidikeumenoi epilogeis uperiskhuoun ton pio genikon. Ta pseudo-stoikheia kai oi pseudo-klaseis logariazontai san kanonika stoikheia kai klaseis antistoikha.
  4. Telos taxinomese analoga me te seira kathorismou: an duo deloseis ekhoun to idio baros , proeleuse kai exeidikeuse , aute pou prosdioristeke teleutaia epikratei. Oi deloseis se eisagomena phulla uphous theorountai oti delonontai prin apo tis deloseis sto idio to phullo uphous.

Aphou loipon prokupsei mia seira-alleloukhia kanonon emphanises pou aphoroun to idio stoikheio tha epilegei pros epharmoge (gia ten apophuge sugkrouseon) e delose pou tha einai teleutaia sten seira pou analutheke pio pano.

  1. | <>. developer.mozilla.org (sta Agglika). Anaktetheke stis 3 Noembriou 2021.

Exoterikoi sundesmoi

[Epexergasia | epexergasia kodika]