How to implement simple paging function using js? (code example)

The paging function is basically indispensable for website construction. So how to use js to implement simple paging function? For novice or non-experienced programmers, this article's introduction to the implementation of js paging function may be helpful.

js implementation of simple paging code examples are as follows:

1.HTML code:

<div class=" " id="pagecontrol"> 
                                <ul>
                                    <li><span id="prepage">上一页</span></li>
                                    <li class="num current"><a>1</a></li>
                                    <li class="num"><a>2</a></li>
                                    <li class="num"><a>3</a></li>
                                    <li class="num"><a>4</a></li>
                                    <li class="num"><a>5</a></li>
                                    <li><span id="nextpage">下一页<span></li>
                                </ul>
                            </div>

2.js Code:

$(function(){
        var curpage=1;//当前页码
        var maxpage = 10;//最大页码
        
        if(maxpage > 1)
            $("#nextpage").addClass("active");
        
        $("#rowsToshow").change(function(){
            console.log($("#rowsToshow").val());
        })
        $("#prepage").live("click",function(){
            curpage = curpage - 1;
            pageshow(curpage,maxpage);
        })
        $("#nextpage").live("click",function(){
            curpage = curpage + 1;
            pageshow(curpage,maxpage);
        })
        $("#pagecontrol li a").live("click",function(){
            curpage = Number($(this).text());
            pageshow(curpage,maxpage);
        })
    })
    
    function pageshow(cp,tp){
        
        var sp = cp - 2;//startpage
        var ep = cp + 2;//endpage
        var eoff = ep - tp;//tp:totalpage
        if(eoff>0){
                sp = sp - eoff;
        }
        if(sp<=0){
            ep = ep -sp + 1;
        }
        var str = &#39;&#39;;
        if(cp != 1)
            str = str + &#39;<ul><li><span id="prepage" class="active">上一页</span></li>&#39;
        else
            str = str + &#39;<ul><li><span id="prepage">上一页</span></li>&#39;
        for(var i= sp;i<=ep;i++){
            if(i>0&& i<=tp){
                if(i == cp)
                    str = str + &#39;<li class="num current"><a>&#39;+i+&#39;</a></li>&#39;;
                else
                    str = str + &#39;<li class="num"><a>&#39;+i+&#39;</a></li>&#39;;
            }
        }
        
        if(cp != tp)
            str = str + &#39;<li><span class="active" id="nextpage">下一页<span></li></ul>&#39;;
        else
            str = str + &#39;<li><span id="nextpage">下一页<span></li></ul>&#39;;
        $("#pagecontrol").html(str);
    }

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