Can you explain the concept of double assignment in ExpressJS and its functionality? An illustration is provided below using a code snippet from an ExpressJS instance.
var server = module.exports = express()
Can you explain the concept of double assignment in ExpressJS and its functionality? An illustration is provided below using a code snippet from an ExpressJS instance.
var server = module.exports = express()
The concept is essentially a quick way to assign values to multiple variables or objects simultaneously. Rather than typing out...
var player = new Character();
var protagonist = player;
module.exports = player;
You can condense it into just one line...
var protagonist = module.exports = new Character()
Assigning a value to two distinct entities is vital in programming. For instance, setting the exports property allows it to be accessed externally from the module, while defining the app variable with a concise name facilitates its internal reference within the module.
The outcome of executing the function is stored in both module.exports as well as app …
In the realm of JavaScript, the value that is assigned during an assignment expression always comes from the assigned value, hence module.exports = express() is processed initially, followed by assigning the result of that operation to app.
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