I am not able to push values from one array to another

JavaScript
1

I need to push values from one array to another.

var a = ['Hello World', 'Mono Space','Programming World'];
for (let i = 0; i < a.length; i++) {
   var abcd = [];
   abcd.push(a[i].split(' ').join('+'));
}

When I log the value of abcd to the console, only the last value appears. What could be the error?

3

The problem is that you’re assigning an empty array to abcd in each iteration, so only the last push remains – declare and initialise abcd outside of the loop instead. That said, you could also just .map() the original array like so:

var abcd = a.map(function (el) {
  return el.split(' ').join('+')
})

And instead of .split()ing and .join()ing the element, you might just .replace() all whitespace characters:

var abcd = a.map(function (el) {
  return el.replace(/\s/g, '+')
})
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4

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