{"id":10,"date":"2026-06-15T06:02:57","date_gmt":"2026-06-15T06:02:57","guid":{"rendered":"https:\/\/it2503.sspu-opava.eu\/?page_id=10"},"modified":"2026-06-15T06:02:57","modified_gmt":"2026-06-15T06:02:57","slug":"vlastnostni-webassembly","status":"publish","type":"page","link":"https:\/\/it2503.sspu-opava.eu\/?page_id=10","title":{"rendered":"Vlastnostni WebAssembly"},"content":{"rendered":"\n<div class=\"wp-block-group benefits-grid\"><div class=\"wp-block-group__inner-container is-layout-flow wp-block-group-is-layout-flow\">\n<div class=\"wp-block-group\"><div class=\"wp-block-group__inner-container is-layout-flow wp-block-group-is-layout-flow\">\n<h2 class=\"wp-block-heading\">Rychlost<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">WebAssembly umo\u017e\u0148uje spou\u0161t\u011bt k\u00f3d s v\u00fdkonem bl\u00ed\u017e\u00edc\u00edm se nativn\u00edmu. D\u00edky bin\u00e1rn\u00edmu form\u00e1tu a efektivn\u00ed kompilaci JIT (Just-In-Time) je zpracov\u00e1n\u00ed WASM modul\u016f v\u00fdrazn\u011b rychlej\u0161\u00ed ne\u017e ekvivalentn\u00ed JavaScriptov\u00fd k\u00f3d. N\u00e1ro\u010dn\u00e9 v\u00fdpo\u010dty b\u011b\u017e\u00ed a\u017e 10\u00d7 rychleji.<\/p>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-group\"><div class=\"wp-block-group__inner-container is-layout-flow wp-block-group-is-layout-flow\">\n<h2 class=\"wp-block-heading\">Bezpe\u010dnost<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">WASM b\u011b\u017e\u00ed v sandboxov\u00e9m prost\u0159ed\u00ed a dodr\u017euje stejn\u00e1 bezpe\u010dnostn\u00ed pravidla jako JavaScript. Statick\u00e1 typov\u00e1 kontrola a explicitn\u00ed spr\u00e1va pam\u011bti eliminuj\u00ed mnoho t\u0159\u00edd bezpe\u010dnostn\u00edch chyb ji\u017e p\u0159i kompilaci. Pam\u011b\u0165 je izolovan\u00e1 a p\u0159\u00edstup k syst\u00e9mov\u00fdm prost\u0159edk\u016fm je striktn\u011b \u0159\u00edzen.<\/p>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-group\"><div class=\"wp-block-group__inner-container is-layout-flow wp-block-group-is-layout-flow\">\n<h2 class=\"wp-block-heading\">Univerz\u00e1lnost<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">WebAssembly nen\u00ed omezeno jen na web. WASM runtime b\u011b\u017e\u00ed na serverech (WASI), v desktopov\u00fdch aplikac\u00edch, v cloudu a dokonce i na embedded za\u0159\u00edzen\u00edch. K\u00f3d napsan\u00fd v C, C++, Rust nebo Go lze zkompilovat do WASM a spustit prakticky kdekoliv \u2014 od prohl\u00ed\u017ee\u010de a\u017e po edge za\u0159\u00edzen\u00ed.<\/p>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-group\"><div class=\"wp-block-group__inner-container is-layout-flow wp-block-group-is-layout-flow\">\n<h2 class=\"wp-block-heading\">Mal\u00e1 velikost<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Bin\u00e1rn\u00ed WASM soubory jsou v\u00fdrazn\u011b men\u0161\u00ed ne\u017e ekvivalentn\u00ed JavaScript. D\u00edky efektivn\u00edmu bin\u00e1rn\u00edmu k\u00f3dov\u00e1n\u00ed a vestav\u011bn\u00e9 podpo\u0159e komprese se WASM moduly na\u010d\u00edtaj\u00ed bleskov\u011b i p\u0159i pomal\u00e9m p\u0159ipojen\u00ed. Typick\u00e1 velikost WASM modulu je o 30\u201350 % men\u0161\u00ed ne\u017e ekvivalentn\u00ed JavaScriptov\u00fd k\u00f3d.<\/p>\n<\/div><\/div>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-group shared-logic\"><div class=\"wp-block-group__inner-container is-layout-flow wp-block-group-is-layout-flow\">\n<h2 class=\"wp-block-heading\">Jedna k\u00f3dov\u00e1 z\u00e1kladna<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Jedn\u00edm z kl\u00ed\u010dov\u00fdch p\u0159\u00ednos\u016f WebAssembly je mo\u017enost sd\u00edlet stejn\u00fd k\u00f3d mezi webovou a serverovou \u010d\u00e1st\u00ed aplikace. Knihovnu pro zpracov\u00e1n\u00ed obrazu napsanou v rustu m\u016f\u017eete zkompilovat do WASM a spou\u0161t\u011bt ji jak v prohl\u00ed\u017ee\u010di, tak na serveru pomoc\u00ed WASI runtime. To v\u00fdrazn\u011b zjednodu\u0161uje v\u00fdvoj, sni\u017euje n\u00e1klady na \u00fadr\u017ebu a zaji\u0161\u0165uje konzistentn\u00ed chov\u00e1n\u00ed nap\u0159\u00ed\u010d platformami.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Nen\u00ed pot\u0159eba udr\u017eovat dv\u011b samostatn\u00e9 implementace pro klienta a server. Sta\u010d\u00ed jedna k\u00f3dov\u00e1 z\u00e1kladna, kterou zkompilujete c\u00edlen\u011b pro ka\u017ed\u00e9 prost\u0159ed\u00ed.<\/p>\n<\/div><\/div>\n","protected":false},"excerpt":{"rendered":"<p>Rychlost WebAssembly umo\u017e\u0148uje spou\u0161t\u011bt k\u00f3d s v\u00fdkonem bl\u00ed\u017e\u00edc\u00edm se nativn\u00edmu. D\u00edky bin\u00e1rn\u00edmu form\u00e1tu a efektivn\u00ed kompilaci JIT (Just-In-Time) je zpracov\u00e1n\u00ed WASM modul\u016f v\u00fdrazn\u011b rychlej\u0161\u00ed ne\u017e ekvivalentn\u00ed JavaScriptov\u00fd k\u00f3d. N\u00e1ro\u010dn\u00e9 v\u00fdpo\u010dty b\u011b\u017e\u00ed a\u017e 10\u00d7 rychleji. Bezpe\u010dnost WASM b\u011b\u017e\u00ed v sandboxov\u00e9m prost\u0159ed\u00ed a dodr\u017euje stejn\u00e1 bezpe\u010dnostn\u00ed pravidla jako JavaScript. Statick\u00e1 typov\u00e1 kontrola a explicitn\u00ed spr\u00e1va pam\u011bti eliminuj\u00ed [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-10","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/it2503.sspu-opava.eu\/index.php?rest_route=\/wp\/v2\/pages\/10","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/it2503.sspu-opava.eu\/index.php?rest_route=\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/it2503.sspu-opava.eu\/index.php?rest_route=\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/it2503.sspu-opava.eu\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/it2503.sspu-opava.eu\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=10"}],"version-history":[{"count":1,"href":"https:\/\/it2503.sspu-opava.eu\/index.php?rest_route=\/wp\/v2\/pages\/10\/revisions"}],"predecessor-version":[{"id":11,"href":"https:\/\/it2503.sspu-opava.eu\/index.php?rest_route=\/wp\/v2\/pages\/10\/revisions\/11"}],"wp:attachment":[{"href":"https:\/\/it2503.sspu-opava.eu\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=10"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}