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Merge pull request #158 from Docent-Inc/feature/리소스최적화
Feature/리소스최적화 - 리소스 로딩 속도 최적화
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,41 @@ | ||
| /** | ||
| * directives.ts | ||
| * 커스텀 디렉티브 | ||
| */ | ||
|
|
||
| // v-lazyload (참고: https://url.kr/l5bxa1) | ||
| const lazyloadDirective = { | ||
| mounted(el, binding) { | ||
| function loadImage(targetElement, imageUrl) { | ||
| const imgElement = targetElement; | ||
| imgElement.setAttribute("src", imageUrl); | ||
| } | ||
|
|
||
| function callIntersectionApi() { | ||
| const options = { | ||
| root: null, | ||
| threshold: 0.5, | ||
| rootMargin: "0px", | ||
| }; | ||
|
|
||
| const callback = (entries, observer) => { | ||
| entries.forEach((entry) => { | ||
| if (entry.isIntersecting) { | ||
| loadImage(entry.target, binding.value); | ||
| observer.unobserve(entry.target); | ||
| } | ||
| }); | ||
| }; | ||
|
|
||
| const lazyLoadingIO = new IntersectionObserver(callback, options); | ||
| lazyLoadingIO.observe(el); | ||
| } | ||
|
|
||
| // 지원하는 경우에만 Observe | ||
| window.IntersectionObserver ? callIntersectionApi() : loadImage(el); | ||
| }, | ||
| }; | ||
|
|
||
| export default defineNuxtPlugin((nuxtApp) => { | ||
| nuxtApp.vueApp.directive("lazyload", lazyloadDirective); | ||
| }); |
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