javascript本地分页

var iTable = document.getElementById("iTable");
var rows = iTable.rows.length;
var pageSize = 3;//每页显示条数
var pageNum = 0;//总页数
var current = 1;
if(rows/pageSize > parseInt(rows/pageSize)){
    pageNum = parseInt(rows/pageSize)+1;
}else{
    pageNum = rows/pageSize;
}
	
function toPage(current){
    var startRow = (current-1)*pageSize+1;
    var endRow = current*pageSize;
    for(var i=1;i<(rows+1);i++){
        var iRow = iTable.rows[i-1];
        if(i>=startRow && i<=endRow){
            iRow.style.display="table-row";
        }else{
            iRow.style.display="none";
        }
    }

    var pageHtml = "<li>当前"+current+"页/共"+pageNum+"页</li>";
    if(current == 1){
        pageHtml = pageHtml + "<li class='disabled'>首页</li>";
        pageHtml = pageHtml + "<li class='disabled'>上一页</li>";
    }else{
        pageHtml = pageHtml + "<li><a onClick='toPage(1)'>首页</a></li>";
        pageHtml = pageHtml + "<li><a onClick='toPage("+(current-1)+")'>上一页</a></li>";
    }
    if(current == pageNum){
        pageHtml = pageHtml + "<li class='disabled'>下一页</li>";
        pageHtml = pageHtml + "<li class='disabled'>尾页</li>";
    }else{
        pageHtml = pageHtml + "<li><a onClick='toPage("+(current+1)+")'>下一页</a></li>";
        pageHtml = pageHtml + "<li><a onClick='toPage("+pageNum+")'>尾页</a></li>";
    }
    document.getElementById("pagination").innerHTML=pageHtml;
}
toPage(1);