js 分页

分页JS代码

<!DOCTYPE HTML>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>分页JS代码</title>
<style type="text/css">
.page{margin:2em;}
.page a{text-decoration:none;display:inline-block;line-height:14px;padding:2px 5px;color:#333;border:1px solid #ccc;margin:0 2px;}
.page a:hover,.page a.on{background:#999;color:#fff;border:1px solid #333;}
.page a.unclick,.page a.unclick:hover{background:none;border:1px solid #eee;color:#999;cursor:default;}
</style>
</head>
<body>
<div class="page"></div>
<div class="page"></div>
</body>
<script type="text/javascript">
//container 容器，count 总页数 pageindex 当前页数
function setPage(container, count, pageindex) {
var container = container;
var count = count;
var pageindex = pageindex;
var a = [];
//总页数少于10 全部显示,大于10 显示前3 后3 中间3 其余....
if (pageindex == 1) {
    a[a.length] = "<a href="#" class="prev unclick">prev</a>";
} else {
    a[a.length] = "<a href="#" class="prev">prev</a>";
}
function setPageList() {
    if (pageindex == i) {
      a[a.length] = "<a href="#" class="on">" + i + "</a>";
    } else {
      a[a.length] = "<a href="#">" + i + "</a>";
    }
}
//总页数小于10
if (count <= 10) {
    for (var i = 1; i <= count; i++) {
      setPageList();
    }
}
//总页数大于10页
else {
    if (pageindex <= 4) {
      for (var i = 1; i <= 5; i++) {
        setPageList();
      }
      a[a.length] = "...<a href="#">" + count + "</a>";
    } else if (pageindex >= count - 3) {
      a[a.length] = "<a href="#">1</a>...";
      for (var i = count - 4; i <= count; i++) {
        setPageList();
      }
    }
    else { //当前页在中间部分
      a[a.length] = "<a href="#">1</a>...";
      for (var i = pageindex - 2; i <= pageindex + 2; i++) {
        setPageList();
      }
      a[a.length] = "...<a href="#">" + count + "</a>";
    }
}
if (pageindex == count) {
    a[a.length] = "<a href="#" class="next unclick">next</a>";
} else {
    a[a.length] = "<a href="#" class="next">next</a>";
}
container.innerHTML = a.join("");
//事件点击
var pageClick = function() {
    var oAlink = container.getElementsByTagName("a");
    var inx = pageindex; //初始的页码
    oAlink[0].onclick = function() { //点击上一页
      if (inx == 1) {
        return false;
      }
      inx--;
      setPage(container, count, inx);
      return false;
    }
    for (var i = 1; i < oAlink.length - 1; i++) { //点击页码
      oAlink[i].onclick = function() {
        inx = parseInt(this.innerHTML);
        setPage(container, count, inx);
        return false;
      }
    }
    oAlink[oAlink.length - 1].onclick = function() { //点击下一页
      if (inx == count) {
        return false;
      }
      inx++;
      setPage(container, count, inx);
      return false;
    }
} ()
}
setPage(document.getElementsByTagName("div")[0],10,1);
setPage(document.getElementsByTagName("div")[1],13,5);
</script>
</html>