{"id":2510,"date":"2024-09-05T01:03:43","date_gmt":"2024-09-04T16:03:43","guid":{"rendered":"https:\/\/haugenic.com\/?p=2510"},"modified":"2024-09-15T15:21:16","modified_gmt":"2024-09-15T06:21:16","slug":"%e3%80%90javascript%e3%80%91%e8%a7%a6%e3%82%8c%e3%82%8b%e3%83%bb%e3%82%af%e3%83%aa%e3%83%83%e3%82%af%e3%81%ae%e4%b8%a1%e6%96%b9%e3%81%a72%e6%9e%9a%e3%81%ae%e7%94%bb%e5%83%8f%e3%82%92%e5%88%87%e3%82%8a","status":"publish","type":"post","link":"https:\/\/haugenic.com\/?p=2510","title":{"rendered":"\u3010JavaScript\u3011\u89e6\u308c\u308b\u30fb\u30af\u30ea\u30c3\u30af\u306e\u4e21\u65b9\u30672\u679a\u306e\u753b\u50cf\u3092\u5207\u308a\u66ff\u3048\u308b\u65b9\u6cd5\u3010PC\u30fb\u30b9\u30de\u30db\u5bfe\u5fdc\u3011"},"content":{"rendered":"

A\u3068B\u306e2\u679a\u306e\u753b\u50cf\u3092\u3001\u89e6\u308c\u308b<\/span>\u3001\u30af\u30ea\u30c3\u30af<\/span>\u3001\u307e\u305f\u306f\u305d\u306e\u4e21\u65b9<\/span>\u3067\u5207\u308a\u66ff\u3048\u308b\u65b9\u6cd5\u3092\u7d39\u4ecb\u3057\u307e\u3059\u3002
\r\n\u30b3\u30d4\u30da\u3067\u7c21\u5358\u306b\u5b9f\u88c5\u3067\u304d\u307e\u3059\uff01<\/p>\r\n

2\u679a\u306e\u753b\u50cf\u3092\u7528\u610f<\/h2>\r\n
\r\n
\"\u753b\u50cfA\"
\r\n\u753b\u50cfA<\/span><\/div>\r\n
\"\u753b\u50cfB\"
\r\n\u753b\u50cfB<\/span><\/div>\r\n<\/div>\r\n

\u5207\u308a\u66ff\u3048\u305f\u3044A\u3068B\u306e2\u679a\u306e\u753b\u50cf\u3092\u7528\u610f\u3057\u307e\u3059\u3002\u30b5\u30a4\u30ba\u306f\u9055\u3063\u3066\u3082\u69cb\u3044\u307e\u305b\u3093\u304c\u3001<\/span>\u30a2\u30b9\u30da\u30af\u30c8\u6bd4\u3092\u5408\u308f\u305b\u3066\u304a\u304f\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059<\/span><\/span>\u3002<\/p>\r\n

\u753b\u50cf\u306b\u89e6\u308c\u308b\u3068\u5207\u308a\u66ff\u3048<\/h2>\r\n

\u30b5\u30f3\u30d7\u30eb<\/h3>\r\n

<\/span><\/p>\r\n

\u30c7\u30d5\u30a9\u30eb\u30c8\u306f\u753b\u50cfA<\/span>\u3092\u8868\u793a\u3002\u30de\u30a6\u30b9\u304c\u4e57\u308b\u3068\u753b\u50cfB<\/span>\u306b\u5207\u308a\u66ff\u308f\u308a\u3001\u30de\u30a6\u30b9\u3092\u96e2\u3059\u3068\u753b\u50cfA<\/span>\u306b\u623b\u308a\u307e\u3059\u3002<\/p>\r\n

\u30b9\u30de\u30db\u306a\u3069\u306e\u30bf\u30c3\u30c1\u30c7\u30d0\u30a4\u30b9\u3067\u306f\u3001\u30de\u30a6\u30b9\u304c\u4e57\u308bonmouseover<\/span>\u306f\u30bf\u30c3\u30c1\u3057\u305f\u3068\u304d\u306b\u767a\u52d5\u3057\u307e\u3059\u304c\u3001\u30de\u30a6\u30b9\u3092\u96e2\u3059onmouseout<\/span>\u306b\u76f8\u5f53\u3059\u308b\u52d5\u4f5c\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u3064\u307e\u308a\u3001\u4e00\u5ea6\u30bf\u30c3\u30c1\u3067\u753b\u50cfB<\/span>\u306b\u5207\u308a\u66ff\u308f\u3063\u305f\u5f8c\u3001\u753b\u50cfA<\/span>\u306b\u623b\u3089\u305a\u3001\u4e00\u751f\u753b\u50cfB<\/span>\u306e\u307e\u307e\u3067\u3059\u3002<\/p>\r\n

HTML\u30b3\u30fc\u30c9<\/h3>\r\n
<span onmouseover=\"this.querySelector('img').src = 'b.jpg';\"\r\n      onmouseout=\"this.querySelector('img').src = 'a.jpg';\">\r\n    <img src=\"a.jpg\" width=\"150px\">\r\n<\/span><\/pre>\r\n
\u753b\u50cf\u306e\u30b5\u30a4\u30ba\u3092\u5909\u66f4\u3057\u305f\u3044\u5834\u5408\u306f\u3001width=”150px”<\/span>\u306e\u5024\u3092\u8abf\u6574\u3057\u307e\u3059\u3002<\/p>\r\n
\u753b\u50cf\u3092\u30af\u30ea\u30c3\u30af\u3059\u308b\u305f\u3073\u306b\u5207\u308a\u66ff\u3048<\/h2>\r\n
\u30b5\u30f3\u30d7\u30eb<\/h3>\r\n
  <\/span><\/p>\r\n
\u30c7\u30d5\u30a9\u30eb\u30c8\u306f\u753b\u50cfA<\/span>\u3092\u8868\u793a\u3002\u30af\u30ea\u30c3\u30af\u3059\u308b\u305f\u3073\u306b\u753b\u50cfB<\/span>\u2192\u753b\u50cfA<\/span>\u2192\u753b\u50cfB<\/span>\u2026\u3068\u7e70\u308a\u8fd4\u3057\u307e\u3059\u3002<\/p>\r\n
\u3053\u308c\u306fPC\u3068\u30b9\u30de\u30db\u3067\u540c\u3058\u6319\u52d5\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\r\n
HTML\u30b3\u30fc\u30c9<\/h3>\r\n
<span onclick=\"var img = this.querySelector('img'); \r\n    img.src = img.src.endsWith('a.jpg') ? 'b.jpg' : 'a.jpg';\">\r\n    <img src=\"a.jpg\" width=\"150px\">\r\n<\/span><\/pre>\r\n
\u3053\u3053\u3067\u306eendsWith(‘a.jpg’)<\/span>\u306f\u3001\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u306e\u30d1\u30b9\u3092\u53c2\u7167\u3057\u3066\u3044\u308b\u308f\u3051\u3067\u306f\u306a\u304f\u3001<\/span>\u73fe\u5728\u306e\u753b\u50cf\u306e\u30d5\u30a1\u30a4\u30eb\u540d\u304c\u300ca.jpg<\/span>\u300d\u3067\u7d42\u308f\u3063\u3066\u3044\u308b\u304b<\/span><\/span>\u3092\u78ba\u8a8d\u3057\u3066\u3044\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u753b\u50cf\u304ca.jpg<\/span>\u3067\u3042\u308c\u3070b.jpg<\/span>\u306b\u5207\u308a\u66ff\u3048\u3001\u305d\u3046\u3067\u306a\u3051\u308c\u3070a.jpg<\/span>\u306b\u623b\u3059\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\r\n
\u30d5\u30ebURL\u3092\u4f7f\u7528\u3059\u308b\u4f8b<\/h3>\r\n
<span onclick=\"var img = this.querySelector('img'); \r\n    img.src = img.src.endsWith('a.jpg') ? 'https:\/\/example.com\/images\/b.jpg' : 'https:\/\/example.com\/images\/a.jpg';\">\r\n    <img src=\"https:\/\/example.com\/images\/a.jpg\" width=\"150px\">\r\n<\/span><\/pre>\r\n
\u30d5\u30ebURL\u3092\u4f7f\u3046\u5834\u5408\u306f\u3001https:\/\/example.com\/images\/ \u306e\u90e8\u5206\u3092\u9069\u5207\u306a\u30d1\u30b9\u306b\u5909\u66f4\u3057\u307e\u3059\u3002<\/p>\r\n
\u30dd\u30a4\u30f3\u30c8\u306f\u3001endsWith(‘a.jpg’)<\/span>\u306b<\/span>\u30d5\u30ebURL\u306f\u5165\u308c\u306a\u3044<\/span><\/span>\u3053\u3068\u3002\u3053\u308c\u306f\u691c\u7d22\u30ef\u30fc\u30c9\u306e\u3088\u3046\u306a\u3082\u306e\u306a\u306e\u3067\u3001<\/span>\u30d5\u30a1\u30a4\u30eb\u540d\u306e\u90e8\u5206\u3060\u3051\u3067OK<\/span><\/span>\u3067\u3059\u3002<\/p>\r\n
\u753b\u50cf\u306e\u30b5\u30a4\u30ba\u3092\u5909\u66f4\u3057\u305f\u3044\u5834\u5408\u306f\u3001width=”150px”<\/span> \u306e\u5024\u3092\u8abf\u6574\u3057\u307e\u3059\u3002<\/p>\r\n
PC\u3067\u306f\u753b\u50cf\u306b\u89e6\u308c\u308b\u30fb\u30b9\u30de\u30db\u3067\u306f\u753b\u50cf\u306b\u30bf\u30c3\u30c1\u3067\u5207\u308a\u66ff\u3048<\/h2>\r\n
\u30b5\u30f3\u30d7\u30eb<\/h3>\r\n
<\/p>\r\n
PC\u3068\u30b9\u30de\u30db\uff08\u30bf\u30c3\u30c1\u30c7\u30d0\u30a4\u30b9\uff09\u3067\u6761\u4ef6\u3092\u5206\u5c90\u3055\u305b\u308b<\/span><\/span>\u30d1\u30bf\u30fc\u30f3\u3067\u3059\u3002<\/p>\r\n
PC\u3067\u306f\u300c\u753b\u50cf\u306b\u89e6\u308c\u308b\u3068\u5207\u308a\u66ff\u3048\u300d\u3001
\r\n\u30b9\u30de\u30db\u3067\u306f\u300c\u753b\u50cf\u3092\u30af\u30ea\u30c3\u30af\u3059\u308b\u305f\u3073\u306b\u5207\u308a\u66ff\u3048\u300d\u3092\u884c\u3044\u307e\u3059\u3002<\/p>\r\n
\u3053\u306e\u5834\u5408\u3001PC\u3068\u30b9\u30de\u30db\u306e\u5206\u5c90\u3055\u305b\u3064\u3064\u3001\u5404\u30c7\u30d0\u30a4\u30b9\u3067\u306e\u30a4\u30d9\u30f3\u30c8\u3092\u51e6\u7406\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u3001HTML\u5185\u3060\u3051\u306e\u51e6\u7406\u3067\u306f\u96e3\u3057\u3044\u3067\u3059\u3002\u305d\u306e\u305f\u3081\u3001JavaScript\u3092\u4f7f\u7528\u3057\u3066\u8907\u96d1\u306a\u52d5\u4f5c\u3092\u5b9f\u73fe\u3057\u307e\u3059\u3002<\/p>\r\n
JavaScript\u30b3\u30fc\u30c9<\/h3>\r\n
<script>\r\n(function() {\r\n    const isTouchDevice = 'ontouchstart' in window || navigator.maxTouchPoints > 0;\r\n    const events = isTouchDevice ? ['click'] : ['mouseover', 'mouseout'];\r\n\r\n    function handleImageEvent(event) {\r\n        const img = event.target;\r\n        const [srcA, srcB] = [img.dataset.srcA, img.dataset.srcB];\r\n\r\n        if (event.type === 'click') {\r\n            img.src = img.src.includes(srcA) ? srcB : srcA;\r\n        } else if (event.type === 'mouseover') {\r\n            img.src = srcB;\r\n        } else if (event.type === 'mouseout') {\r\n            img.src = srcA;\r\n        }\r\n    }\r\n\r\n    document.querySelectorAll('.kirikae-img').forEach(img => {\r\n        events.forEach(event => img.addEventListener(event, handleImageEvent));\r\n    });\r\n})();\r\n<\/script>\r\n<\/pre>\r\n
JavaScript\u30b3\u30fc\u30c9\u306f<\/body><\/span>\u306e\u524d\u306b\u5165\u308c\u307e\u3059\u3002<\/p>\r\n
HTML\u30b3\u30fc\u30c9<\/h3>\r\n
<img src=\"a.jpg\" class=\"kirikae-img\" data-src-a=\"a.jpg\" data-src-b=\"b.jpg\" width=\"150px\"><\/pre>\r\n
<img<\/span>\u306bclass=”kirikae-img”<\/span>\u3092\u6307\u5b9a\u3059\u308c\u3070\u3001\u4ed6\u306e\u753b\u50cf\u306b\u3082\u52d5\u4f5c\u3092\u9069\u7528\u3067\u304d\u307e\u3059\u3002<\/p>\r\n
\u4f8b\u3048\u3070\u3001inu.jpg<\/span>\u3068neko.jpg<\/span>\u3092\u5207\u308a\u66ff\u3048\u305f\u3044\u5834\u5408\u306f\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u66f8\u304d\u307e\u3059\u3002<\/p>\r\n
<img src=\"inu.jpg\" class=\"kirikae-img\" data-src-a=\"inu.jpg\" data-src-b=\"neko.jpg\" width=\"150px\"><\/pre>\r\n
\u753b\u50cf\u306e\u30b5\u30a4\u30ba\u3092\u5909\u66f4\u3057\u305f\u3044\u5834\u5408\u306f\u3001width=”150px”<\/span> \u306e\u5024\u3092\u8abf\u6574\u3057\u307e\u3059\u3002<\/p>\r\n
\u753b\u50cf\u306b\u89e6\u308c\u308b\u30fb\u30af\u30ea\u30c3\u30af\u306e\u3069\u3061\u3089\u3067\u3082\u5207\u308a\u66ff\u3048<\/h2>\r\n
\u30b5\u30f3\u30d7\u30eb<\/h3>\r\n
<\/p>\r\n
PC\u3067\u306f\u30de\u30a6\u30b9\u304c\u4e57\u308b\u30fb\u30de\u30a6\u30b9\u304c\u96e2\u308c\u308b\u30fb\u30af\u30ea\u30c3\u30af\u306e\u3044\u305a\u308c\u306e\u52d5\u4f5c\u3067\u3082\u753b\u50cf\u304c\u5207\u308a\u66ff\u308f\u308a\u307e\u3059\u3002\u3064\u307e\u308a\u5168\u76db\u308a<\/span>\u306e\u6319\u52d5\u3067\u3059\u3002
\r\n\u30b9\u30de\u30db\u3067\u306f\u300c\u753b\u50cf\u3092\u30af\u30ea\u30c3\u30af\u3059\u308b\u305f\u3073\u306b\u5207\u308a\u66ff\u3048\u300d\u3092\u884c\u3044\u307e\u3059\u3002<\/p>\r\n
JavaScript\u30b3\u30fc\u30c9<\/h3>\r\n
<script>\r\n(function() {\r\n    const isTouchDevice = 'ontouchstart' in window || navigator.maxTouchPoints > 0;\r\n    const events = isTouchDevice ? ['click'] : ['mouseover', 'mouseout', 'click'];\r\n\r\n    function handleImageEvent(event) {\r\n        const img = event.target;\r\n        const [srcA, srcB] = [img.dataset.srcA, img.dataset.srcB];\r\n\r\n        if (event.type === 'click') {\r\n            img.src = img.src.includes(srcA) ? srcB : srcA;\r\n        } else if (event.type === 'mouseover') {\r\n            img.src = srcB;\r\n        } else if (event.type === 'mouseout') {\r\n            img.src = srcA;\r\n        }\r\n    }\r\n\r\n    document.querySelectorAll('.kirikae-img').forEach(img => {\r\n        events.forEach(event => img.addEventListener(event, handleImageEvent));\r\n    });\r\n})();\r\n<\/script><\/pre>\r\n
JavaScript\u30b3\u30fc\u30c9\u306f<\/body><\/span>\u306e\u524d\u306b\u5165\u308c\u307e\u3059\u3002<\/p>\r\n
HTML\u30b3\u30fc\u30c9<\/h3>\r\n
<img src=\"a.jpg\" class=\"kirikae-img\" data-src-a=\"a.jpg\" data-src-b=\"b.jpg\" width=\"150px\"><\/pre>\r\n
\u753b\u50cf\u306e\u30b5\u30a4\u30ba\u3092\u5909\u66f4\u3057\u305f\u3044\u5834\u5408\u306f\u3001width=”150px”<\/span> \u306e\u5024\u3092\u8abf\u6574\u3057\u307e\u3059\u3002<\/p>","protected":false},"excerpt":{"rendered":"2\u679a\u306e\u753b\u50cf\u3092\u89e6\u308c\u308b\u30fb\u30af\u30ea\u30c3\u30af\u3059\u308b\u305f\u3073\u306b\u5207\u308a\u66ff\u3048\u308b\u65b9\u6cd5\u3002PC\u3067\u306f\u30de\u30a6\u30b9\u30aa\u30fc\u30d0\u30fc\u3001\u30b9\u30de\u30db\u3067\u306f\u30bf\u30c3\u30c1\u306e\u52d5\u4f5c\u3067\u753b\u50cf\u304c\u5207\u308a\u66ff\u308f\u308a\u307e\u3059\u3002","protected":false},"author":1,"featured_media":2511,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[5],"tags":[],"class_list":["post-2510","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-javascript"],"acf":[],"_links":{"self":[{"href":"https:\/\/haugenic.com\/index.php?rest_route=\/wp\/v2\/posts\/2510","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/haugenic.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/haugenic.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/haugenic.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/haugenic.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2510"}],"version-history":[{"count":33,"href":"https:\/\/haugenic.com\/index.php?rest_route=\/wp\/v2\/posts\/2510\/revisions"}],"predecessor-version":[{"id":2695,"href":"https:\/\/haugenic.com\/index.php?rest_route=\/wp\/v2\/posts\/2510\/revisions\/2695"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/haugenic.com\/index.php?rest_route=\/wp\/v2\/media\/2511"}],"wp:attachment":[{"href":"https:\/\/haugenic.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2510"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/haugenic.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2510"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/haugenic.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2510"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}