var http = require('http');
var cheerio = require('cheerio');
var url = 'http://www.imooc.com/learn/348';
function filterChapters(html){
var $ = cheerio.load(html);
var chapters = $('.learnchapter');
/*
[{
chapterTitle: '',
videos: [
title: '',
id: ''
]
}]
*/
var courseData = [];
chapters.each(function(item){
var chapter = $(this);
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 video = chapter.find('.studyvideo');
var title = video.text();
var id = video.attr('href').split('video/')[1];
chapterData.videos.push({
title: title,
id: id
})
});
courseData.push(chapterData);
});
return courseData;
}
function printCourseInto(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('data',function(data){
var courseData = filterChapters(data);
printCourseInto(courseData);
})
}).on('error',function(e){
console.log("Got error:" + e.message);
});