Web Scraping

Inspiration

MLH inspire me to explore web scraping

What it does

Fetching data is often one of the first times beginners encounter asynchronous code. By default, JavaScript is synchronous, meaning that events are executed line-by-line. Whenever a function is called, the program waits until the function is returned before moving on to the next line of code.

for example. Combining these two types of execution — synchronous and asynchronous — involves some syntax which can be confusing for beginners. We’ll be using the async and await keywords, introduced in ES7. They’re syntactic sugar on top of ES6’s Promise syntax, and this — in turn — is syntactic sugar on top of the previous system of callbacks.

How we built it

/* Passed-in Callbacks */
doSomething(function(result) {
  doSomethingElse(result, function(newResult) {
    doThirdThing(newResult, function(finalResult) {
      console.log(finalResult);
    }, failureCallback);
  }, failureCallback);
}, failureCallback);