Split strings in arrays to more arrays

Question

I have this array:

["Name: Bob, LastName: Smith, Age: 77","Name: John, LastName: Cabbage, Age: 34","Name: Regan, LastName: Gobsmolly, Age: 80"]

How would you split all the strings in the array into more arrays from the comma, so the result would end up like this:

[["Name: Bob", "LastName: Smith", "Age: 77"],["Name: John", "LastName: Cabbage", "Age: 34"],["Name: Regan", "LastName: Gobsmolly", "Age: 80"]]

I have already tried splitting the items in the array with a loop, with the aim of returning the Name value from every array:

function getEntryNames(nameSplit) {
        var nameSplit;
        for (var i = 0; i < nameSplit.length; i++) {
            return nameSplit[i].split(',')[i];
        }
    }
document.write(getEntryNames(theArray))

The problem is, the function will only split the first item in the array, so I get this result:

Name: Bob

When I really want this result:

Name: Bob, Name: John, Name: Regan

So how do you split items in an array to more arrays?

CodeLama · Accepted Answer · 2015-10-30 09:03:50Z

1

What about this: (the original array content will be replaced in the process)

var arr = ["Name: Bob, LastName: Smith, Age: 77","Name: John, LastName: Cabbage, Age: 34","Name: Regan, LastName: Gobsmolly, Age: 80"];

function splitSomething(arr) {
  var item;
  for (var i = 0; i < arr.length; i++)
    {
      item = arr[i];
      arr[i] = item.split(',');
    }
  return arr;
}
console.log(splitSomething(arr));

answered Oct 30, 2015 at 9:03

CodeLama

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Comments

Yeldar Kurmangaliyev · Accepted Answer · 2015-10-30 09:00:24Z

1

You can simply execute split() to every item of an array using Array.prototype.map:

var arr = ["Name: Bob, LastName: Smith, Age: 77","Name: John, LastName: Cabbage, Age: 34","Name: Regan, LastName: Gobsmolly, Age: 80"];

arr = arr.map(function(x) { 
    return x.split(',').map(function(x) { return x.trim(); });
});

document.body.innerHTML = JSON.stringify(arr); // just an output

String.prototype.trim is simply supposed to remove leading and trailing spaces.

answered Oct 30, 2015 at 9:00

Yeldar Kurmangaliyev

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1 Comment

Cat Overlord Over a year ago

Thank you for informing me about map() (I am relatively new to javascript)

ntalbs · Accepted Answer · 2015-10-30 09:02:42Z

1

Assuming that your array name is arr:

arr.map(function (e) { return e.split(", "); })

I tested this code in nodejs console, and the result is:

> var arr = ["Name: Bob, LastName: Smith, Age: 77","Name: John, LastName: Cabbage, Age: 34","Name: Regan, LastName: Gobsmolly, Age: 80"]
undefined
> arr.map(function (e) { return e.split(", "); })
[ [ 'Name: Bob', 'LastName: Smith', 'Age: 77' ],
  [ 'Name: John', 'LastName: Cabbage', 'Age: 34' ],
  [ 'Name: Regan', 'LastName: Gobsmolly', 'Age: 80' ] ]

answered Oct 30, 2015 at 9:02

ntalbs

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Comments

Magus · Accepted Answer · 2015-10-30 09:03:45Z

0

Array.map can do this easily :

arr.map(function(str) {
    return str.split(',');
});

You may have to trim some strings to have the good result :

arr.map(function(str) {
    return str.split(',').map(function(val) {
        return val.trim();
    });
});

answered Oct 30, 2015 at 9:03

Magus

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Comments

Khiem Tran · Accepted Answer · 2015-10-30 09:07:44Z

0

Should be something like this. Because you put return so the function after the first element.

function getData(data) {
  for (var i = 0; i < data.length; i++) {
    var value = data[i];
    var item = {};
    var array = value.split(",");
    for (var j = 0; j < array.length; j++) {
      var element = array[j].split(":");
      var key = element[0].trim();
      var value = element[1].trim();
      item[key] = value;
    }
    result.push(item);
  }
  return result;
}

answered Oct 30, 2015 at 9:07

Khiem Tran

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