January 2018
Beginner
658 pages
13h 10m
English
Content preview from Learning Node.js Development
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Simulating delay using setTimeout
Now, we can also simulate a delay using setTimeout, so let's do that. In our code, just before the callback (user) statement, we'll use setTimeout just like we did before in the previous section. We'll pass an arrow function (=>) in as the first argument, and set a delay of 3 seconds using 3000 milliseconds:
setTimeout(() => { }, 3000); callback(user);};
Now I can take my callback call, delete it from line 10, and add it inside of the callback function, as shown here:
setTimeout(() => { callback(user); }, 3000);};
Now we'll not be responding to the getUser request until three seconds have passed. Now this will be more or less similar to what happens when we create real-world examples of callbacks, we pass ...