Markdown 渲染测试

Obsidian Flavored Markdown(OFM)

Callouts

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foo

note open

foo

note closed

foo

Codeblock

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var CODE_MAX_HEIGHT = 200;
var containers = [];

// 展开
$('body').on('click', '.js_unfold_code_btn', function () {
$(this).closest('.js_highlight_container').addClass('on');
});
// 收起
$('body').on('click', '.js_retract_code_btn', function () {
var $container = $(this).closest('.js_highlight_container').removeClass('on');
var winTop = $(window).scrollTop();
var offsetTop = $container.offset().top;
$(this).css('top', 0);
if (winTop > offsetTop) {
// 设置滚动条位置
$('body, html').animate({
scrollTop: $container.offset().top - CODE_MAX_HEIGHT
}, 600);
}
});
// 滚动事件,触发动画效果
$(window).on('scroll', function () {
var scrollTop = $(window).scrollTop();
var temp = [];
for (let i = 0; i < containers.length; i++) {
var item = containers[i];
var { $container, height, $hide, hasHorizontalScrollbar } = item;
if ($container.closest('body').length === 0) {
// 如果 $container 元素已经不在页面上, 则删除该元素
// 防止pjax页面跳转之后,元素未删除
continue;
}
temp.push(item);
if (!$container.hasClass('on')) {
continue;
}
var offsetTop = $container.offset().top;
var hideBtnHeight = $hide.outerHeight();
// 减去按钮高度,减去底部滚动条高度
var maxTop = parseInt(height - (hasHorizontalScrollbar ? 17 : 0) - hideBtnHeight);
let top = parseInt(
Math.min(
Math.max(scrollTop - offsetTop, 0), // 如果小于 0 ,则取 0
maxTop,// 如果大于 height ,则取 height
)
);
// 根据 sin 曲线设置"收起代码"位置
var halfHeight = parseInt($(window).height() / 2 * Math.sin((top / maxTop) * 90 * (2 * Math.PI / 360)));
$hide.css('top', Math.min(top + halfHeight, maxTop));
}
containers = temp;
});

// 添加隐藏容器
function addCodeWrap($node) {
var $container = $node.wrap('<div class="js_highlight_container highlight-container"><div class="highlight-wrap"></div></div>').closest('.js_highlight_container');

// 底部 "展开代码" 与 侧边栏 "收起代码"
var $btn = $(`
<div class="highlight-footer">
<a class="js_unfold_code_btn show-btn" href="javascript:;">展开代码<i class="fa fa-angle-down" aria-hidden="true"></i></a>
</div>
<a class="js_retract_code_btn hide-btn" href="javascript:;"><i class="fa fa-angle-up" aria-hidden="true"></i>收起代码</a>
`);

$container.append($btn);
return $container;
};

function codeUnfold() {
$('.highlight').each(function () {
// 防止重复渲染
if (this.__render__ === true) {
return true;
}
this.__render__ = true;
var $this = $(this);
var height = $(this).outerHeight();
if (height > CODE_MAX_HEIGHT) {
// 添加展开&收起容器
var $container = addCodeWrap($this, height);
containers.push({
$container,
height,
$hide: $container.find('.js_retract_code_btn'),
hasHorizontalScrollbar: this.scrollWidth > this.offsetWidth,
});
}
});
};