{"id":435,"date":"2005-06-29T03:00:00","date_gmt":"2005-06-28T18:00:00","guid":{"rendered":"https:\/\/ecoop.net\/memo\/2005-06-29-3.html"},"modified":"2005-06-29T03:00:00","modified_gmt":"2005-06-28T18:00:00","slug":"2005-06-29-3","status":"publish","type":"post","link":"https:\/\/www.ecoop.net\/memo\/archives\/2005-06-29-3.html","title":{"rendered":"JavaScript \u304b\u3089\u753b\u50cf\u306e\u5b58\u5728\u6709\u7121\u3092\u8abf\u3079\u308b"},"content":{"rendered":"

\n– Image \u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u4f7f\u3046\u3068\u30b9\u30de\u30fc\u30c8\u306b\u3067\u304d\u308b\u3002Firefox1.0.4, IE6 \u3067\u78ba\u8a8d\u3002\n<\/p>\n

function existImage(sImageUrl){
\n    var img = new Image();
\n    img.src = sImageUrl;
\n    return img.height > 0; \/\/ \u8aad\u307f\u8fbc\u307f\u306b\u5931\u6557\u3059\u308c\u3070 0 \u306b\u306a\u308b\u3002
\n}
\n  
\nif(existImage(“http:\/\/www.google.co.jp\/intl\/ja_jp\/images\/logo.gif”)){
\n  alert(“\u5b58\u5728\u3057\u307e\u3059”);
\n}else{
\n  alert(“\u5b58\u5728\u3057\u307e\u305b\u3093”);
\n}\n<\/p><\/blockquote>\n

 
\n\u8ffd\u8a18(2009-08-18):
\n\u30e1\u30e2\u30ea\u30fc\u30af\u30e9\u30d5\u30c8\u3055\u3093\u306e\u8a18\u4e8b<\/a>\u3088\u308a\u3001\u3053\u306e\u65b9\u6cd5\u306fIE7\u4ee5\u964d\u3067\u306f\u52d5\u4f5c\u3057\u306a\u3044\u3088\u3046\u3067\u3059\u3002\u4ee3\u66ff\u5b9f\u88c5\u306f\u30ea\u30f3\u30af\u5148\u3092\u53c2\u7167\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

– Image \u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u4f7f\u3046\u3068\u30b9\u30de\u30fc\u30c8\u306b\u3067\u304d\u308b\u3002Firefox1.0.4, IE6 \u3067\u78ba\u8a8d\u3002 function existImage(sImageUrl){    &nbs … \u7d9a\u304d\u3092\u8aad\u3080 JavaScript \u304b\u3089\u753b\u50cf\u306e\u5b58\u5728\u6709\u7121\u3092\u8abf\u3079\u308b<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[],"tags":[60],"class_list":["post-435","post","type-post","status-publish","format-standard","hentry","tag-javascript"],"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/www.ecoop.net\/memo\/wp-json\/wp\/v2\/posts\/435","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.ecoop.net\/memo\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.ecoop.net\/memo\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.ecoop.net\/memo\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.ecoop.net\/memo\/wp-json\/wp\/v2\/comments?post=435"}],"version-history":[{"count":0,"href":"https:\/\/www.ecoop.net\/memo\/wp-json\/wp\/v2\/posts\/435\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.ecoop.net\/memo\/wp-json\/wp\/v2\/media?parent=435"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ecoop.net\/memo\/wp-json\/wp\/v2\/categories?post=435"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ecoop.net\/memo\/wp-json\/wp\/v2\/tags?post=435"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}