JavaScript ESCMAScript 6 arrow functions - parentheses around parameter ecmascript arrow functions,ecmascript arrow function syntax,ecmascript 6 arrow

I'm new to javascript and cannot understand simple thing - what is the difference between

...(x) => { return x*2}

and

...x => { return x*2} //(just for example, may not work)

Can someone explain or give link for description?

Answer:1

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Updated at : {{res.updated_at}} Value: {"updated_at":"2017-04-12T21:46:20Z"} I need to change this 2017-04-12T21:46:20Z to 2017-04-12 21:46:20 by removing T and Z. Please help how to achieve this. ...

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