{"id":597,"date":"2024-12-28T17:55:35","date_gmt":"2024-12-28T09:55:35","guid":{"rendered":"https:\/\/www.laixuexila.com\/?p=597"},"modified":"2024-12-28T17:55:35","modified_gmt":"2024-12-28T09:55:35","slug":"%e5%a6%82%e4%bd%95%e5%9c%a8-ios-%e4%b8%8a%e5%ae%9e%e7%8e%b0%e5%9b%ba%e5%ae%9a%e8%83%8c%e6%99%af%e7%9a%84%e6%95%88%e6%9e%9c%e8%80%8c%e4%b8%8d%e5%bd%b1%e5%93%8d%e6%80%a7%e8%83%bd","status":"publish","type":"post","link":"https:\/\/www.laixuexila.com\/index.php\/2024\/12\/28\/%e5%a6%82%e4%bd%95%e5%9c%a8-ios-%e4%b8%8a%e5%ae%9e%e7%8e%b0%e5%9b%ba%e5%ae%9a%e8%83%8c%e6%99%af%e7%9a%84%e6%95%88%e6%9e%9c%e8%80%8c%e4%b8%8d%e5%bd%b1%e5%93%8d%e6%80%a7%e8%83%bd\/","title":{"rendered":"\u5982\u4f55\u5728 iOS \u4e0a\u5b9e\u73b0\u56fa\u5b9a\u80cc\u666f\u7684\u6548\u679c\u800c\u4e0d\u5f71\u54cd\u6027\u80fd"},"content":{"rendered":"\n
\n

\u5728 iOS \u4e0a\uff0c\u56fa\u5b9a\u80cc\u666f\u7684\u6548\u679c\uff08\u4f8b\u5982\u4f7f\u7528 background-attachment: fixed<\/code>\uff09\u5728\u67d0\u4e9b\u60c5\u51b5\u4e0b\u53ef\u80fd\u4f1a\u5bfc\u81f4\u6027\u80fd\u95ee\u9898\uff0c\u7279\u522b\u662f\u5728\u6eda\u52a8\u9875\u9762\u65f6\uff0c\u56e0\u4e3a iOS \u8bbe\u5907\uff08\u5c24\u5176\u662f\u65e7\u8bbe\u5907\uff09\u53ef\u80fd\u4e0d\u5b8c\u5168\u652f\u6301\u8fd9\u4e2a\u7279\u6027\uff0c\u6216\u8005\u5b83\u5728\u6eda\u52a8\u65f6\u4f1a\u5bfc\u81f4\u9875\u9762\u91cd\u7ed8\u6216\u6027\u80fd\u4e0b\u964d\u3002\u56e0\u6b64\uff0c\u4e3a\u4e86\u5728 iOS \u4e0a\u5b9e\u73b0\u56fa\u5b9a\u80cc\u666f\u7684\u6548\u679c\u800c\u4e0d\u5f71\u54cd\u6027\u80fd\uff0c\u901a\u5e38\u6709\u51e0\u79cd\u65b9\u6cd5\u53ef\u4ee5\u8003\u8651\uff1a<\/p>\n<\/blockquote>\n\n\n\n

1. \u4f7f\u7528 background-attachment: fixed<\/code> \u548c background-position<\/code> \u6539\u8fdb\u6027\u80fd<\/strong><\/h3>\n\n\n\n

\u5982\u679c\u4f60\u5e0c\u671b\u5b9e\u73b0\u56fa\u5b9a\u80cc\u666f\u7684\u6548\u679c\uff0c\u5e76\u4e14\u5c3d\u91cf\u51cf\u5c11\u6027\u80fd\u5f71\u54cd\uff0c\u53ef\u4ee5\u901a\u8fc7\u4f7f\u7528 background-attachment: fixed<\/code> \u5e76\u914d\u5408 background-position<\/code> \u6765\u6a21\u62df\u56fa\u5b9a\u80cc\u666f\u7684\u6548\u679c\u3002<\/p>\n\n\n\n

\u793a\u4f8b\u4ee3\u7801\uff1a<\/h4>\n\n\n\n
body {\n  background-image: url('background.jpg');\n  background-size: cover;\n  background-attachment: fixed;  \/* \u56fa\u5b9a\u80cc\u666f *\/\n  background-position: center center;\n}<\/code><\/pre>\n\n\n\n
\n\n\n\n
2. \u4f7f\u7528 transform: translate<\/code> \u6765\u6a21\u62df\u80cc\u666f\u56fa\u5b9a\u6548\u679c<\/strong><\/h3>\n\n\n\n
\u53e6\u4e00\u79cd\u4f18\u5316\u65b9\u6cd5\u662f\u5229\u7528 transform: translate<\/code> \u6765\u6a21\u62df\u56fa\u5b9a\u80cc\u666f\u7684\u6548\u679c\u3002\u8fd9\u662f\u56e0\u4e3a transform<\/code> \u4e0d\u4f1a\u5bfc\u81f4\u9875\u9762\u7684\u91cd\u7ed8\uff0c\u56e0\u6b64\u5728\u6027\u80fd\u4e0a\u66f4\u4e3a\u9ad8\u6548\uff0c\u5c24\u5176\u662f\u5728\u6eda\u52a8\u65f6\u3002<\/p>\n\n\n\n
\u793a\u4f8b\u4ee3\u7801\uff1a<\/h4>\n\n\n\n
<!DOCTYPE html>\n<html lang=\"en\">\n<head>\n  <meta charset=\"UTF-8\">\n  <meta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\">\n  <title>Fixed Background with Transform<\/title>\n  <style>\n    body {\n      margin: 0;\n      height: 200vh; \/* \u4f7f\u9875\u9762\u6709\u6eda\u52a8\u6761 *\/\n      overflow: hidden; \/* \u9632\u6b62\u5176\u4ed6\u6eda\u52a8\u6761\u51fa\u73b0 *\/\n    }\n\n    .background {\n      position: fixed;\n      top: 0;\n      left: 0;\n      width: 100%;\n      height: 100%;\n      background-image: url('background.jpg');\n      background-size: cover;\n      background-position: center;\n      will-change: transform; \/* \u63d0\u793a\u6d4f\u89c8\u5668\u8be5\u5143\u7d20\u4f1a\u53d1\u751f\u53d8\u5316\uff0c\u5e2e\u52a9\u63d0\u5347\u6027\u80fd *\/\n      z-index: -1; \/* \u786e\u4fdd\u80cc\u666f\u5728\u5176\u4ed6\u5185\u5bb9\u4e0b\u65b9 *\/\n    }\n\n    .content {\n      position: relative;\n      z-index: 1;\n      padding: 20px;\n      color: white;\n    }\n  <\/style>\n<\/head>\n<body>\n\n  <div class=\"background\"><\/div>\n  <div class=\"content\">\n    <h1>This is the content section<\/h1>\n    <p>Scroll down to see the background effect.<\/p>\n  <\/div>\n\n  <script>\n    window.addEventListener('scroll', function () {\n      const scrollPosition = window.scrollY;\n      document.querySelector('.background').style.transform = `translateY(${scrollPosition * 0.5}px)`;\n    });\n  <\/script>\n\n<\/body>\n<\/html><\/code><\/pre>\n\n\n\n
\u89e3\u91ca\uff1a<\/h4>\n\n\n\n
    \n
  • .background<\/code> \u4f7f\u7528 position: fixed<\/code> \u6765\u56fa\u5b9a\u80cc\u666f\u4f4d\u7f6e\uff0c\u786e\u4fdd\u80cc\u666f\u59cb\u7ec8\u586b\u5145\u6574\u4e2a\u89c6\u53e3\u3002<\/li>\n\n\n\n
  • \u901a\u8fc7\u76d1\u542c\u6eda\u52a8\u4e8b\u4ef6\uff0c\u5728\u6eda\u52a8\u65f6\u4f7f\u7528 transform: translateY<\/code> \u6765\u6a21\u62df\u80cc\u666f\u7684\u6eda\u52a8\u6548\u679c\u3002\u4f7f\u7528 transform<\/code> \u53ef\u4ee5\u63d0\u9ad8\u6027\u80fd\uff0c\u56e0\u4e3a\u5b83\u4e0d\u4f1a\u5f15\u8d77\u91cd\u65b0\u6e32\u67d3\u6216\u9875\u9762\u91cd\u6392\u3002<\/li>\n\n\n\n
  • will-change: transform<\/code> \u63d0\u793a\u6d4f\u89c8\u5668\u4f18\u5316\u6027\u80fd\uff0c\u5c24\u5176\u662f\u5f53\u67d0\u4e2a\u5143\u7d20\u5728\u6eda\u52a8\u65f6\u9891\u7e41\u53d8\u5316\u65f6\u3002<\/li>\n<\/ul>\n\n\n\n
    \n\n\n\n
    3. \u4f7f\u7528 requestAnimationFrame<\/code> \u4f18\u5316\u6027\u80fd<\/strong><\/h3>\n\n\n\n
    \u5982\u679c\u4f60\u60f3\u8981\u66f4\u7cbe\u7ec6\u5730\u63a7\u5236\u6eda\u52a8\u8fc7\u7a0b\u5e76\u786e\u4fdd\u6d41\u7545\u6027\uff0c\u53ef\u4ee5\u4f7f\u7528 requestAnimationFrame<\/code> \u6765\u4f18\u5316\u6eda\u52a8\u4e8b\u4ef6\u3002\u8fd9\u4e2a\u65b9\u6cd5\u4f1a\u5728\u6d4f\u89c8\u5668\u4e0b\u4e00\u4e2a\u91cd\u7ed8\u5468\u671f\u5f00\u59cb\u65f6\u6267\u884c\u4ee3\u7801\uff0c\u4ece\u800c\u907f\u514d\u56e0\u8fc7\u591a\u7684\u6eda\u52a8\u4e8b\u4ef6\u89e6\u53d1\u5bfc\u81f4\u6027\u80fd\u4e0b\u964d\u3002<\/p>\n\n\n\n
    \u793a\u4f8b\u4ee3\u7801\uff1a<\/h4>\n\n\n\n
    let lastScrollY = 0;\nconst background = document.querySelector('.background');\n\nfunction handleScroll() {\n  const scrollY = window.scrollY;\n\n  \/\/ \u53ea\u5728\u6eda\u52a8\u4f4d\u7f6e\u53d1\u751f\u53d8\u5316\u65f6\u5904\u7406\n  if (scrollY !== lastScrollY) {\n    lastScrollY = scrollY;\n    \/\/ \u4f7f\u7528 requestAnimationFrame \u4f18\u5316\u6027\u80fd\n    requestAnimationFrame(() => {\n      background.style.transform = `translateY(${scrollY * 0.5}px)`;\n    });\n  }\n}\n\nwindow.addEventListener('scroll', handleScroll);<\/code><\/pre>\n\n\n\n
    \u89e3\u91ca\uff1a<\/h4>\n\n\n\n
      \n
    • requestAnimationFrame<\/code> \u4f1a\u5c06\u6eda\u52a8\u5904\u7406\u653e\u5165\u6d4f\u89c8\u5668\u7684\u6e32\u67d3\u961f\u5217\u4e2d\uff0c\u907f\u514d\u9891\u7e41\u89e6\u53d1\u91cd\u6392\u548c\u91cd\u7ed8\uff0c\u51cf\u5c11\u6027\u80fd\u6d88\u8017\u3002<\/li>\n\n\n\n
    • \u901a\u8fc7 requestAnimationFrame<\/code> \u4f7f\u5f97\u6bcf\u6b21\u6eda\u52a8\u66f4\u65b0\u53ea\u4f1a\u53d1\u751f\u5728\u6d4f\u89c8\u5668\u7684\u6e32\u67d3\u5468\u671f\u5185\uff0c\u8fd9\u6709\u52a9\u4e8e\u5e73\u6ed1\u52a8\u753b\u548c\u63d0\u9ad8\u6027\u80fd\u3002<\/li>\n<\/ul>\n\n\n\n
      \n\n\n\n
      4. \u4f7f\u7528\u56fe\u7247\u7684\u6e10\u53d8\u8272\u548c background-position<\/code> \u6765\u4f18\u5316\u56fa\u5b9a\u80cc\u666f\u6548\u679c<\/strong><\/h3>\n\n\n\n
      \u5bf9\u4e8e\u5927\u90e8\u5206\u573a\u666f\uff0c\u7279\u522b\u662f\u5f53\u80cc\u666f\u56fe\u7247\u5f88\u5927\u65f6\uff0c\u53ef\u4ee5\u8003\u8651\u4ec5\u4f7f\u7528\u7b80\u5355\u7684\u6e10\u53d8\u8272\u80cc\u666f\u548c background-position<\/code> \u6765\u6a21\u62df\u6548\u679c\uff0c\u8fd9\u6837\u65e2\u53ef\u4ee5\u907f\u514d\u6027\u80fd\u95ee\u9898\uff0c\u53c8\u80fd\u4fdd\u6301\u89c6\u89c9\u6548\u679c\u3002<\/p>\n\n\n\n
      \u793a\u4f8b\u4ee3\u7801\uff1a<\/h4>\n\n\n\n
      body {\n  background: linear-gradient(rgba(0, 0, 0, 0.3), rgba(0, 0, 0, 0.3)), url('background.jpg');\n  background-size: cover;\n  background-position: center;\n  height: 100vh;\n  background-attachment: fixed;\n}<\/code><\/pre>\n\n\n\n
      \u89e3\u91ca\uff1a<\/h4>\n\n\n\n
        \n
      • \u901a\u8fc7\u53e0\u52a0\u6e10\u53d8\u8272\u4e0e\u56fe\u7247\u80cc\u666f\uff0c\u53ef\u4ee5\u5728\u4e0d\u4f7f\u7528\u590d\u6742\u6548\u679c\u7684\u60c5\u51b5\u4e0b\u5f97\u5230\u826f\u597d\u7684\u89c6\u89c9\u4f53\u9a8c\u3002<\/li>\n\n\n\n
      • \u4f7f\u7528 background-attachment: fixed<\/code> \u65f6\uff0c\u5728\u8f83\u65b0\u7248\u672c\u7684 iOS \u4e0a\u53ef\u80fd\u4f1a\u6709\u6240\u4f18\u5316\uff0c\u4f46\u5982\u679c\u517c\u5bb9\u6027\u548c\u6027\u80fd\u662f\u95ee\u9898\uff0c\u53ef\u4ee5\u8003\u8651\u51cf\u5c11\u56fe\u50cf\u5c3a\u5bf8\u6216\u7528\u6e10\u53d8\u8272\u66ff\u4ee3\u3002<\/li>\n<\/ul>\n\n\n\n
        \n\n\n\n
        5. \u61d2\u52a0\u8f7d\u80cc\u666f\u56fe\u50cf<\/strong><\/h3>\n\n\n\n
        \u5728\u6eda\u52a8\u9875\u9762\u65f6\u52a0\u8f7d\u80cc\u666f\u56fe\u50cf\u53ef\u4ee5\u5e2e\u52a9\u4f18\u5316\u9875\u9762\u52a0\u8f7d\u548c\u6eda\u52a8\u6027\u80fd\u3002\u4f60\u53ef\u4ee5\u901a\u8fc7 JavaScript \u6216 CSS \u5ef6\u8fdf\u52a0\u8f7d\u80cc\u666f\u56fe\u7247\uff0c\u76f4\u5230\u5b83\u8fdb\u5165\u89c6\u53e3\u3002<\/p>\n\n\n\n
        \u793a\u4f8b\u4ee3\u7801\uff1a<\/h4>\n\n\n\n
        <div class=\"background lazy\" data-bg=\"background.jpg\"><\/div><\/code><\/pre>\n\n\n\n
        window.addEventListener('scroll', function () {\n  const backgroundElement = document.querySelector('.lazy');\n  const rect = backgroundElement.getBoundingClientRect();\n\n  \/\/ \u5224\u65ad\u5143\u7d20\u662f\u5426\u8fdb\u5165\u89c6\u53e3\n  if (rect.top <= window.innerHeight && rect.bottom >= 0) {\n    backgroundElement.style.backgroundImage = `url(${backgroundElement.dataset.bg})`;\n    backgroundElement.classList.remove('lazy');\n  }\n});<\/code><\/pre>\n\n\n\n
        \u89e3\u91ca\uff1a<\/h4>\n\n\n\n
          \n
        • \u5ef6\u8fdf\u52a0\u8f7d\u80cc\u666f\u56fe\u50cf\uff08\u61d2\u52a0\u8f7d\uff09\u6709\u52a9\u4e8e\u51cf\u5c11\u4e0d\u5fc5\u8981\u7684\u8d44\u6e90\u6d88\u8017\uff0c\u5c24\u5176\u662f\u5728\u9875\u9762\u6eda\u52a8\u65f6\u3002<\/li>\n\n\n\n
        • getBoundingClientRect()<\/code> \u68c0\u67e5\u5143\u7d20\u662f\u5426\u5728\u89c6\u53e3\u4e2d\uff0c\u5982\u679c\u662f\uff0c\u5219\u52a0\u8f7d\u80cc\u666f\u56fe\u50cf\u3002<\/li>\n<\/ul>\n\n\n\n
          \n\n\n\n
          \u603b\u7ed3<\/h3>\n\n\n\n
            \n
          • \u4f7f\u7528 transform: translateY<\/code> \u6a21\u62df\u80cc\u666f\u6eda\u52a8\u6548\u679c<\/strong>\uff1a\u6bd4 background-attachment: fixed<\/code> \u66f4\u52a0\u9ad8\u6548\uff0c\u907f\u514d\u4e86 iOS \u4e0a\u6027\u80fd\u95ee\u9898\u3002<\/li>\n\n\n\n
          • \u4f7f\u7528 requestAnimationFrame<\/code> \u4f18\u5316\u6eda\u52a8\u52a8\u753b<\/strong>\uff1a\u5e2e\u52a9\u51cf\u5c11\u6027\u80fd\u74f6\u9888\uff0c\u5c24\u5176\u5728\u6eda\u52a8\u65f6\u3002<\/li>\n\n\n\n
          • \u51cf\u5c11\u80cc\u666f\u56fe\u7247\u5c3a\u5bf8\u548c\u61d2\u52a0\u8f7d\u80cc\u666f\u56fe<\/strong>\uff1a\u4f18\u5316\u56fe\u50cf\u52a0\u8f7d\u6027\u80fd\uff0c\u907f\u514d\u5f71\u54cd\u6eda\u52a8\u6d41\u7545\u6027\u3002<\/li>\n\n\n\n
          • \u8003\u8651\u6e10\u53d8\u8272\u4e0e\u56fa\u5b9a\u80cc\u666f\u7684\u66ff\u4ee3\u65b9\u6848<\/strong>\uff1a\u907f\u514d\u8fc7\u4e8e\u590d\u6742\u7684\u80cc\u666f\u6548\u679c\uff0c\u4ee5\u63d0\u9ad8\u6027\u80fd\u3002<\/li>\n<\/ul>\n\n\n\n
            \u8fd9\u4e9b\u65b9\u6cd5\u80fd\u591f\u5e2e\u52a9\u4f60\u5728 iOS \u4e0a\u5b9e\u73b0\u56fa\u5b9a\u80cc\u666f\u6548\u679c\uff0c\u540c\u65f6\u4fdd\u6301\u826f\u597d\u7684\u6027\u80fd\u8868\u73b0\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
            \u5728 iOS \u4e0a\uff0c\u56fa\u5b9a\u80cc\u666f\u7684\u6548\u679c\uff08\u4f8b\u5982\u4f7f\u7528 background-attachment: fixed\uff09\u5728\u67d0\u4e9b\u60c5\u51b5 […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[55],"tags":[],"class_list":["post-597","post","type-post","status-publish","format-standard","hentry","category-css"],"_links":{"self":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts\/597","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/comments?post=597"}],"version-history":[{"count":1,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts\/597\/revisions"}],"predecessor-version":[{"id":598,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts\/597\/revisions\/598"}],"wp:attachment":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/media?parent=597"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/categories?post=597"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/tags?post=597"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}