有些项目业务比较简单,但用到前端分页的地方又比较多,插件的体积比较难控制用起来也麻烦,所以自己写一个简易的。
实现思路
通过 jQuery.slice() 选择子集的区间元素, 然后控制显示隐藏来实现;
假设每页显示数量为x,当前页码为y,元素索引从0开始,那么显示的区间即为 x(y-1) 到 xy。
效果演示
demo代码
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>前端分页实现demo</title>
</head>
<body>
<div class="parent">
<ul class="box" style="min-height: 147px;">
</ul>
<div class="page-box">
<button class="page-btn prev">上一页</button>
<span class="page-num">1/1</span>
<button class="page-btn next">下一页</button>
</div>
</div>
<div class="parent">
<ul class="box2" style="min-height: 63px;">
</ul>
<div class="page-box">
<button class="page-btn prev">上一页</button>
<span class="page-num">1/1</span>
<button class="page-btn next">下一页</button>
</div>
</div>
<script src="https://cdn.bootcdn.net/ajax/libs/jquery/3.5.1/jquery.min.js"></script>
<script>
function InitPagination(eleBox, size) {
var box = $(eleBox),
children = box.children(),
total = children.length,
pageBox = box.next(),
pageNum = pageBox.find('.page-num'),
maxNum = !Math.ceil(total / size) ? 1 : Math.ceil(total / size);
pageNum.text('1/' + maxNum);
children.hide();
children.slice(0, size).show();
pageBox.off().on('click', '.prev, .next', function (e) {
var nowNum = parseInt(pageNum.text().split('/')[0]);
if ($(this).hasClass('prev')) {
nowNum--;
if (nowNum < 1) {
nowNum = 1
return;
}
} else {
nowNum++;
if (nowNum > maxNum) {
nowNum = maxNum
return;
}
}
children.hide();
children.slice(size * (nowNum - 1), nowNum * size).show();
pageNum.text(nowNum + '/' + maxNum);
})
}
// 模拟数据写入
var box = $('.box'), box2 = $('.box2'), li = '';
for (let i = 0; i < 16; i++) {
li += '<li>' + i + '</li>'
}
box.html(li);
box2.html(li);
// 实例化分页器
new InitPagination(box, 7)
new InitPagination(box2, 3)
</script>
</body>
</html>
以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持编程网。