#8 Functional Approach: Destructuring
When we call a JS function we have problems to identify the parameters name, once we only send the argument, like in the example below:
The problem is, the arguments have no name, but they have a specific order, depending on your code this is a door to create bugs once is easy to put this parameter in a different order.
This case is only one of the things that destructuring helps you to solve! Using destructuring you could nominate your parameters using a simple array, like this:
Cool right? Now the order doesn’t matter anymore, and you only needed to add “{“ before your parameters and “}” after.
But there is more, using this technique you could define a default value for your parameters like this:
Also, you can use destructuring to extract from a long array only the keys that you want to use and transform this keys into a new variable, like this:
If you to want to know more about Javascript I recommend these books:
- You Don’t Know JS Serie by Kyle Simpson (My favourite)
- Eloquent JS by Marijn Haverbeke
- Head First Javascript by Michael Morrison
- Secrets of the JavaScript Ninja by Bear Bibeault and John Resig
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