JavaScript显示分页按钮

javaScript显示分页按钮

/** * 获取分页按钮 * @param total_page     总页数 * @param current_page  当前页 * @param num                    每页显示多少个分页按钮 * @returns {String} */function get_page_html(total_page,current_page,num){        var page_html = "";    if(isNaN(total_page) && isNaN(current_page)){            }else{        //范围判断        if(current_page>total_page) {            current_page = total_page;        }                // 当前页的前后各显示多少页        var count = Math.floor(num/2);                // 当前页后面要显示的页数        var after_count = count;        if(count-current_page>0){            after_count += (count-current_page);        }        if(total_page<=1) {            //只有一页            page_html += '<ul class="pagination">';            page_html += '<li class="active"><a href="Javascript:pageQuery(1)">1</a></li>';            page_html += '</ul>';        }else if(total_page<=num){            page_html += '<ul class="pagination">';             //把页数全部显示出来            for(var i=1;i<=total_page;i++) {                if(current_page==i){                       page_html += '<li class="active"><a href="javascript:pageQuery('+current_page+')">'+current_page+'</a></li>';                }else{                       page_html += '<li><a href="javascript:pageQuery('+i+')">'+i+'</a></li>';                }            }            page_html += '</ul>';        }else {            page_html += '<ul class="pagination">';                        //显示前一页按钮            if(current_page-count>1) {                page_html += '<li><a href="javascript:pageQuery('+(current_page-1)+')">&laquo;</a></li>';            }            //显示当前页前面的页码按钮            for(var i=count;i>=1;i--) {                if(current_page-i>0){                    page_html += '<li><a href="javascript:pageQuery('+(current_page-i)+')">'+(current_page-i)+'</a></li>';                }            }                        // 当前页按钮            page_html += '<li class="active"><a href="javascript:pageQuery('+current_page+')">'+current_page+'</a></li>';                    // 显示当前页后面的页码按钮            for(var j=1;j<=after_count;j++){                if((current_page+j)<=total_page){                    page_html += '<li><a href="javascript:pageQuery('+(current_page+j)+')">'+(current_page+j)+'</a></li>';                }            }                        //显示后一页按钮            if(current_page+count<total_page){                page_html += '<li><a href="javascript:pageQuery('+(current_page+1)+')">&raquo;</a></li>';            }            page_html += '</ul>';        }    }    return page_html;}

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