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RSS订阅计算机编译原理—试验指导书—递归下降语法分析
目的：
理解自定向下语法分析的基本模式，熟悉递归下降分析程序的构造。
内容：
采用递归下降法对赋值语句、算术表达式运算、while循环语句、if分支语句及其分类体系进行分析。
2009-09-15
网页开发中的jsp分页代码
function setpage()
{
if(totalpage<=10){ //总页数小于十页
for (count=1;count<=totalpage;count++)
{ if(count!=cpage)
{
outstr = outstr + "<a href='javascript:void(0)' onclick='gotopage("+count+")'>"+count+"</a>";
}else{
outstr = outstr + "<span class='current' >"+count+"</span>";
}
}
}
if(totalpage>10){ //总页数大于十页
if(parseInt((cpage-1)/10) == 0)
{
for (count=1;count<=10;count++)
{ if(count!=cpage)
{
outstr = outstr + "<a href='javascript:void(0)' onclick='gotopage("+count+")'>"+count+"</a>";
}else{
outstr = outstr + "<span class='current'>"+count+"</span>";
}
}
outstr = outstr + "<a href='javascript:void(0)' onclick='gotopage("+count+")'> next </a>";
}
else if(parseInt((cpage-1)/10) == parseInt(totalpage/10))
{
outstr = outstr + "<a href='javascript:void(0)' onclick='gotopage("+(parseInt((cpage-1)/10)*10)+")'>previous</a>";
for (count=parseInt(totalpage/10)*10+1;count<=totalpage;count++)
{ if(count!=cpage)
{
outstr = outstr + "<a href='javascript:void(0)' onclick='gotopage("+count+")'>"+count+"</a>";
}else{
outstr = outstr + "<span class='current'>"+count+"</span>";
}
}
}
else
{
outstr = outstr + "<a href='javascript:void(0)' onclick='gotopage("+(parseInt((cpage-1)/10)*10)+")'>previous</a>";
for (count=parseInt((cpage-1)/10)*10+1;count<=parseInt((cpage-1)/10)*10+10;count++)
{
if(count!=cpage)
{
outstr = outstr + "<a href='javascript:void(0)' onclick='gotopage("+count+")'>"+count+"</a>";
}else{
outstr = outstr + "<span class='current'>"+count+"</span>";
}
}
outstr = outstr + "<a href='javascript:void(0)' onclick='gotopage("+count+")'> next </a>";
}
}
document.getElementById("setpage").innerHTML = "<div id='setpage'><span id='info'>共"+totalpage+"页|第"+cpage+"页<\/span>" + outstr + "<\/div>";
outstr = "";
}
2009-07-31
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