ParseInt elements in array to int

Question

Suppose you have an array of the following element basically three numbers: 2,000 3,000, and 1,000

In order to say multiply each by 1,000 you would have to parse it to be set as an int:

var i = 0;
var array_nums[3,000, 2,000, 1,000];
for(i = 0; i < array_nums.length; i++){
  array_nums[i] = parseInt(array_nums[i]);
}
arraytd_dth_1[i]*1000;
//arraytd_dth_1[i].replace(/(\d)(?=(\d\d\d)+(?!\d))/g, "$1,")

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>

Once parsed I would want to multiply by them by 1,000 and display them so that it has commas for every three digits. This is just a general solution I came up with for Javascript and JQuery.

I noticed when I parse it 3,000 becomes 3. It should be 3000. Same happens for the others too. — user8723305
– user8723305, Commented Oct 5, 2017 at 18:15
Your array has six numbers not 3, the , is a separator in JavaScript, not a decimal point, use 3.000 instead. — Djaouad
– Djaouad, Commented Oct 5, 2017 at 18:20
The problem is these elements in the array are coming from an XML file with the values 3,000 2,000 and 1,000. Thus it really is three numbers. The XML file was already formatted that way. — user8723305
– user8723305, Commented Oct 5, 2017 at 18:22
@user8723305 - you'll need to manipulate the data coming in from the xml in order to end up with the intended array of integers. As is, this array is actually 6 elements ... [3, 0, 2, 0, 1, 0] which would output to ["3,000", "0", "2,000", "0", "1,000", "0"] — jbrown
– jbrown, Commented Oct 5, 2017 at 18:37

Thusitha · Accepted Answer · 2017-10-05 18:30:24Z

1

2,000 is not a number. It's a String.
You should first remove the commas and then parse it to a number.

var i = 0;
var array_nums = ["3,000", "2,000", "1,000"];
for (i = 0; i < array_nums.length; i++) {
  array_nums[i] = parseInt(array_nums[i].replace(new RegExp(",", 'g'), "")) * 1000;
}
console.log(array_nums);

edited Oct 5, 2017 at 18:30

answered Oct 5, 2017 at 18:24

Thusitha

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3 Comments

Hassan Imam Over a year ago

Why are you using jQuery?

Thusitha Over a year ago

I just copied the question code snippet. It's not needed actually.

user8723305 Over a year ago

Is it possible to include the commas so that it reads 1,000,000 or 2,000,000 for example?

jbrown · Accepted Answer · 2017-10-05 18:22:41Z

0

You can do it in a forEach and use toLocaleString() to format with commas. Straight Javascript ... no JQuery necessary.

var array_output=[];
var array_nums = [3000, 2000, 1000];

array_nums.forEach(x => {
  array_output.push((x*1000).toLocaleString());
})

answered Oct 5, 2017 at 18:22

jbrown

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Comments

LowCool · Accepted Answer · 2017-10-05 18:23:05Z

0

if you are using ES6 try let newArr = array_nums.map(data => data*1000)

answered Oct 5, 2017 at 18:23

LowCool

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