Currently, I am developing a web scraper in Node.js that utilizes the libraries request and cheerio to fetch and parse website pages.
I need to ensure that the callback function is executed only after both Request and Cheerio have completed loading the page. My approach involves using the async extension, but I am facing some confusion regarding its implementation within my code.
request(url, function (err, resp, body) {
var $;
if (err) {
console.log("Error!: " + err + " using " + url);
} else {
async.series([
function (callback) {
$ = cheerio.load(body);
callback();
},
function (callback) {
// perform operations with the `$` content here
}
]);
}
});
While exploring the documentation for cheerio, I could not find any clear examples related to callbacks upon successful content loading.
Can you suggest a more effective way to handle this situation? Currently, when I feed 50 URLs into the script, it tends to progress before cheerio has fully loaded the content, leading to potential errors due to asynchronous loading issues.
Since I am relatively new to working with asynchronous programming and callbacks, I may be overlooking a straightforward solution. Any guidance would be greatly appreciated.