\r\n","customSummary":"","excerpt":"","imgst":"","jsCode":"function scrollInit() {\r\n let lastScrollTop = 0;\r\n const formWrap = document.getElementById('form-wrap');\r\n const beforeimg = document.getElementById('beforeimg');\r\n const mainContent = document.getElementById('maincontent');\r\n\r\n // \u51fd\u6570\uff1a\u68c0\u67e5\u5143\u7d20\u662f\u5426\u5728\u89c6\u53e3\u4e2d \r\n function isInViewport(element) {\r\n const rect = element.getBoundingClientRect();\r\n return (\r\n rect.top >= 0 &&\r\n rect.left >= 0 &&\r\n rect.bottom / 2 <= (window.innerHeight || document.documentElement.clientHeight) &&\r\n rect.right <= (window.innerWidth || document.documentElement.clientWidth)\r\n );\r\n }\r\n\r\n // \u76d1\u542c\u6eda\u52a8\u4e8b\u4ef6\uff0c\u53ea\u9700\u7ed1\u5b9a\u4e00\u6b21\r\n if (!scrollInit.isInitialized) {\r\n window.addEventListener('scroll', function () {\r\n const scrollTop = window.pageYOffset || document.documentElement.scrollTop;\r\n\r\n if (isInViewport(beforeimg) || isInViewport(mainContent)) {\r\n if (scrollTop > lastScrollTop) {\r\n // \u5411\u4e0a\u6eda\u52a8\u65f6\r\n formWrap.style.height = '1050px';\r\n formWrap.style.top = '-200px';\r\n }\r\n } else {\r\n // \u5982\u679cmainContent\u4e0d\u5728\u89c6\u53e3\u4e2d\uff0c\u64a4\u9500hover\u6837\u5f0f\r\n formWrap.style.height = '447px';\r\n formWrap.style.top = '0px';\r\n }\r\n\r\n lastScrollTop = scrollTop <= 0 ? 0 : scrollTop; // \u907f\u514d\u8d1f\u503c\r\n }, false);\r\n scrollInit.isInitialized = true; // \u6807\u8bb0\u4e3a\u5df2\u521d\u59cb\u5316\r\n }\r\n}\r\n\r\nfunction init() {\r\n scrollInit();\r\n // \u8fd9\u91cc\u53ef\u4ee5\u6dfb\u52a0\u5176\u4ed6\u521d\u59cb\u5316\u903b\u8f91\r\n}\r\n\r\n$(document).ready(init);\r\n\r\n$(document).on('pjax:end', function () {\r\n init(); // Pjax\u52a0\u8f7d\u5185\u5bb9\u540e\u91cd\u65b0\u521d\u59cb\u5316\r\n});\r\n","mathjax":"auto","noThumbInfoEmoji":"","noThumbInfoStyle":"default","outdatedNotice":"no","parseWay":"auto","reprint":"standard","show_footer":"0","show_sidebar":"1","thumb":"","thumbChoice":"no","thumbDesc":"","thumbSmall":"","thumbStyle":"default"};
