node.js 获取csdn首页热点新闻

var http = require('http');
var cheerio = require('cheerio');

http.get('http://www.csdn.net/', function(res) {
console.log('status code:' + res.statusCode);
var page = '';
res.on('data', function(data) {
page += data.toString();
});
res.on('end', function() {
if (res.statusCode == 200 && !page.empty) {
var results = ParseMainNews(page);
for (i in results) {
console.log(results[i].title + '(' + results[i].href + ')');
}
}
});
}).on('error', function(err) {
console.log(err);
});

function ParseMainNews(page) {
var results = new Array();
var $ = cheerio.load(page);
$('.news_list>ul>li').each(function() {
results.push({
title: $('a', $(this)).attr('title'),
href: $('a', $(this)).attr('href')
});
});
return results;
}

var seconds = 5;
var id = setInterval(function() {
console.log(seconds--);
if (seconds === 0) {
console.log('bye bye ...');
clearInterval(id);
}
}, 1000);

输出：

status code:200

云安全平台Zscaler B轮融资1亿美元，估值已达10亿美元(http://www.csdn.net/article/2015-08-10/2825428)

社交产品后端架构设计(http://www.csdn.net/article/2015-08-10/2825423)

从Java转向Go——AeroFS的一段奇妙之旅(http://www.csdn.net/article/2015-08-11/2825432-AeroFS)

Rust开发技术���习路线(http://special.csdncms.csdn.net/rust/index.shtml)

MDCC 2015|首批嘉宾名单揭晓 Twitter CTO空降北京(http://www.csdn.net/article/2015-08-11/2825431)

iOS App研发的最后冲刺：内测与部署(http://www.csdn.net/article/2015-08-10/2825427)

为什么你需要近距离接触Rust？(http://www.csdn.net/article/2015-08-07/2825403)

Google产品总监：改良Apple Watch UI的若干设想(http://www.csdn.net/article/2015-08-10/2825421)

5

4

3

2

1

bye bye ...