5 nifty JavaScript tricks that you may not know

Over the years, I have seen several JavaScript techniques that are particularly clever. Here's a short list of 5 such techniques that I have been using again and again. I hope it inspires you too to rethink how you write certain piece of code.

1. A compact string comparison

Let's say you want to check if a string value is present in a set of strings. You obviously go for a if statement as below.

if(fruit === 'apple' || fruit === 'banana' || fruit === 'chikoo'){
    doMagic();
}

Here's a compact version of above code:

if({apple:1,banana:1,chikoo:1}[fruit]){
    doMagic();
}

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