\u958b\u767a\u306eAH\u3067\u3059\u3002<\/p>\n\n\n\n
chatgpt\u3055\u3093\u3092\u4f7f\u3063\u3066\u308b\u3068\u666e\u6bb5\u4f7f\u308f\u306a\u3044\u3088\u3046\u306a\u65b0\u3057\u3044javascript\u306e\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u304c\u542b\u307e\u308c\u3066\u3044\u3066\u5b66\u3073\u304c\u591a\u3044\u6bce\u65e5\u3067\u3059\u3002
\u305d\u306e\u4e2d\u3067IntersectionObserver\u3068\u3044\u3046\u306e\u304c\u3042\u3063\u305f\u306e\u3067\u8abf\u3079\u305f\u3089Observer\u7cfb\u306e\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u304c\u3051\u3063\u3053\u3046\u3042\u3063\u305f\u306e\u3067\u3068\u308a\u3042\u3048\u305a\u4f7f\u3063\u3066\u307f\u307e\u3059\u3002<\/p>\n\n\n\n
\u25ab\ufe0fIntersectionObserver<\/p>\n\n\n\n
document.addEventListener(‘DOMContentLoaded’, function() {<\/p>\n\n\n\n
var target = document.querySelector('#target');\n\nvar iobs = new IntersectionObserver(function(entries){\n\n entries.forEach(function(entry,index,arr){\n\n \/\/\u898b\u3048\u305f\u3089\u767a\u706b\n if(entry.isIntersecting){\n\n console.log('\u767a\u706b');\n\n }\n\n });\n\n}, {\n \/\/\u8981\u7d20\u304c\u3069\u308c\u304f\u3089\u3044\u898b\u3048\u305f\u304b\n threshold: 0.8\n});\n\n\/\/\u76e3\u8996\u958b\u59cb\niobs.observe(target);<\/code><\/pre>\n\n\n\n});<\/p>\n\n\n\n
\u8981\u7d20\u6307\u5b9a\u3057\u3066\u30b9\u30af\u30ed\u30fc\u30eb\u3057\u3066\u898b\u3048\u305f\u3089\u767a\u706b\u3059\u308b\u3084\u3064\u3067\u308f\u308a\u3068\u4f7f\u3044\u6240\u306f\u3042\u308b\u6c17\u304c\u3057\u307e\u3059\u3002
rootMagin\u3068\u3044\u3046\u30aa\u30d7\u30b7\u30e7\u30f3\u304c\u3042\u3063\u3066\u767a\u706b\u3059\u308b\u5834\u6240\u3092\u7d30\u304b\u304f\u8a2d\u5b9a\u3067\u304d\u308b\u306e\u306f\u826f\u3044\u3067\u3059\u3002
\u8907\u6570\u76e3\u8996\u306ftarget\u90e8\u5206\u304c\u91cd\u8907\u3057\u306a\u3044\u3088\u3046\u306b\u518d\u5ea6observe\u3059\u308c\u3070\u554f\u984c\u306a\u3044\u3088\u3046\u3067\u3059\u3002<\/p>\n\n\n\n
\u25ab\ufe0fMutationObserver<\/p>\n\n\n\n
document.addEventListener(‘DOMContentLoaded’, function() {<\/p>\n\n\n\n
var target = document.querySelector('#target');\n\nvar mobs = new MutationObserver(function(mutations){\n\n console.log('mutations');\n\n});\n\n\/\/ \u76e3\u8996\u958b\u59cb\nmobs.observe(target, {\n childList: true, \/\/ \u5b50\u30ce\u30fc\u30c9\u306e\u8ffd\u52a0\u30fb\u524a\u9664\u3092\u76e3\u8996\n attributes: true, \/\/ \u5c5e\u6027\u306e\u5909\u5316\u3092\u76e3\u8996\n subtree: true, \/\/ \u5b50\u5b6b\u30ce\u30fc\u30c9\u3082\u76e3\u8996\n characterData: true, \/\/ \u30c6\u30ad\u30b9\u30c8\u5185\u5bb9\u306e\u5909\u66f4\u3082\u76e3\u8996\n});\n\nsetTimeout(function(){\n\n target.innerHTML = '<p>mutations<\/p>';\n\n\n},5000);<\/code><\/pre>\n\n\n\n});<\/p>\n\n\n\n
DOM\u306b\u8ffd\u52a0\u306a\u3069\u306e\u5909\u5316\u304c\u73fe\u308c\u305f\u3089\u767a\u706b\u3059\u308b\u3068\u3044\u3046\u3002
\u5e83\u544a\u306a\u3069\u5916\u90e8\u304b\u3089\u306e\u5909\u5316\u3092\u76e3\u8996\u3059\u308b\u306b\u306f\u826f\u3044\u3068\u66f8\u304b\u308c\u3066\u3044\u305f\u3051\u308c\u3069\u30fb\u30fb\u30fb\u305d\u3093\u306a\u306b\u4f7f\u3046\u3068\u3053\u308d\u3042\u308b\u306e\u3060\u308d\u3046\u304b\u3002
\u30ea\u30a2\u30eb\u30bf\u30a4\u30e0\u30ec\u30f3\u30c0\u30ea\u30f3\u30b0\u3059\u308b\u3088\u3046\u306a\u30b5\u30a4\u30c8\u3067\u306f\u4e00\u62ec\u3067\u6307\u5b9a\u51fa\u6765\u308b\u306e\u306f\u4fbf\u5229\u3060\u3068\u306f\u601d\u3046\u3051\u308c\u3069\u3002<\/p>\n\n\n\n
\u3042\u3068\u306f<\/p>\n\n\n\n
ResizeObserver \/\/\u8981\u7d20\u306e\u30b5\u30a4\u30ba\u5909\u66f4\u3092\u76e3\u8996
PerformanceObserver \/\/\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306e\u76e3\u8996
ReportingObserver \/\/\u4f7f\u3048\u306a\u304f\u306a\u3063\u305f\u8981\u7d20\u306e\u76e3\u8996<\/p>\n\n\n\n
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\u6587\uff1a\u958b\u767aAH<\/p>\n","protected":false},"excerpt":{"rendered":"
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