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$(function () {
const urlParams = new URLSearchParams(window.location.search);
const keyword = urlParams.get('kw')?.trim();
if (!keyword) return;
// 转义正则表达式特殊字符，避免安全问题
const escapedKeyword = keyword.replace(/[.*+?^${}()|[\]\\]/g, '\\$&');
// 创建不区分大小写的正则表达式（全局匹配）
const regex = new RegExp(`(${escapedKeyword})`, 'gi');
// 递归遍历并高亮文本节点
const escapeHTML = str => str.replace(/[&<>"']/g,
tag => ({
'&': '&',
'<': '<',
'>': '>',
'"': '"',
"'": '''
}[tag] || tag));
function highlightTextNodes(element) {
$(element).contents().each(function () {
if (this.nodeType === Node.TEXT_NODE) {
const $this = $(this);
const text = escapeHTML($this.text());
// 使用正则替换并保留原始大小写
if (regex.test(text)) {
const replaced = text.replace(regex, '<mark>$1</mark>');
$this.replaceWith(replaced);
}
} else if (
this.nodeType === Node.ELEMENT_NODE &&
!$(this).is('script, style, noscript, textarea')
) {
highlightTextNodes(this);
}
});
}
$('section').each(function () {
highlightTextNodes(this);
});
});
function initCopyButtons() {
$('.copy').remove();
$('div.highlight').each(function () {
var $btn = $('<button>', { class: 'copy', type: 'button', text: '📋' });
$(this).append($btn);
$btn.on('click', function () {
var code = $btn.siblings('pre').find('code').text().trim();
navigator.clipboard.writeText(code)
.then(function () { $btn.text('✅'); })
.catch(function () { $btn.text('❌'); })
.finally(function () { setTimeout(function () { $btn.text('📋'); }, 1500); });
});
});
}
$(function() {
initCopyButtons();
});
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