分页(Pagination)是将大量数据分割成多个较小的部分进行显示的技术。在前端开发中,分页通常用于处理大量数据列表,以提高用户体验和页面加载速度。
以下是一个简单的JavaScript前端分页示例:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>JavaScript Pagination</title>
<style>
.page-item {
display: inline-block;
padding: 5px 10px;
margin-right: 5px;
cursor: pointer;
}
.page-item.active {
background-color: #007bff;
color: white;
}
</style>
</head>
<body>
<div id="data-container"></div>
<div id="pagination"></div>
<script>
const data = Array.from({ length: 100 }, (_, i) => `Item ${i + 1}`);
const itemsPerPage = 10;
const totalPages = Math.ceil(data.length / itemsPerPage);
let currentPage = 1;
function renderData() {
const start = (currentPage - 1) * itemsPerPage;
const end = start + itemsPerPage;
const pageData = data.slice(start, end);
const dataContainer = document.getElementById('data-container');
dataContainer.innerHTML = pageData.map(item => `<div>${item}</div>`).join('');
}
function renderPagination() {
const paginationContainer = document.getElementById('pagination');
paginationContainer.innerHTML = '';
for (let i = 1; i <= totalPages; i++) {
const pageItem = document.createElement('div');
pageItem.className = `page-item ${i === currentPage ? 'active' : ''}`;
pageItem.textContent = i;
pageItem.onclick = () => {
currentPage = i;
renderData();
renderPagination();
};
paginationContainer.appendChild(pageItem);
}
}
function initPagination() {
renderData();
renderPagination();
}
initPagination();
</script>
</body>
</html>
通过以上示例代码和解释,你应该能够理解并实现一个基本的前端分页功能。如果遇到具体问题,可以根据错误信息和日志进一步调试和排查。
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