var http = require('http')
var url = 'http://www.imooc.com/learn/348'
http.get(url,function(res){
var html = ''
res.on('data',function(data){
html += data
})
res.on('end',function(){
console.log(html)
})
}).on('error',function(){
console.log('获取课程失败')
})
2015-08-29
var http = require('http');
var cheerio = require('cheerio');
var url = 'http://localhost/imooc/';
function filterChapters(html) {
var $ = cheerio.load(html);
var chapters = $('.chapter');
var courseData = [];
// console.log(chapters);
chapters.each(function(item) {
var chapter = $(this);
var chapterTitle = chapter.find('strong').text();
var videos = chapter.find('.video').children('li');
var chapterData = {
chapterTitle: chapterTitle,
videos: []
};
videos.each(function(item) {
var video = $(this).find('.studyvideo');
var videoTitle = video.text().split('\n')[0];
var id = video.attr('href').split('video/')[1];
chapterData.videos.push({
title: videoTitle,
id: id
});
});
courseData.push(chapterData);
});
return courseData;
}
function printCourseInfo(courseData){
courseData.forEach(function(item) {
var chapterTitle = item.chapterTitle;
console.log(chapterTitle + '\n');
item.videos.forEach(function(video) {
console.log(' [' + video.id + ']' + video.title + '\n');
});
});
}
http.get(url, function(res) {
var html = '';
res.on('data', function(data) {
html += data;
});
res.on('end', function() {
var courseData = filterChapters(html);
printCourseInfo(courseData);
// console.log(courseData);
});
}).on('error', function() {
console.log('获取课程数据出错');
});网页保存到本地，再执行js
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