convert string array to integer array

Question

I have created an array:

var endFlowArray = new Array;
for (var endIndex in flowEnd) { // <- this is just some numbers 
 for (var i in dateflow) { // <- same thing 
 var check = $.inArray(flowEnd[endIndex], dateflow[i]);
 if (check >= 0) {
 endFlowArray.push(i);
 flowEnd[endIndex] = null;
 }
 }
}

How can I convert a string array of:

["286", "712", "1058"]

to integer array like:

[286, 712, 1058]

• user400654: It's an easy fix. .push(+i) or .push(parseInt(i)). Simply converting a string to an integer.
• Chris Eberle: my endFlowArray came up with something like this You need to explain this statement. How did it "come up"? Are you using a javascript debugger? alert? Something else?
• gdoron: is dateflow an array of strings or numbers?
• user1170618: Kevin B solve it BUT i still need to know whar happend
• mplungjan: Show the creation of the strings in dataflow and you have your answer

Answer 1

var arrayOfNumbers = arrayOfStrings.map(Number);

• darth vader: Short and sweet way to typecast.

Answer 2

Strings in the console are symbolized by wrapping them in quotes. By that fact, we can assume that i is a string. Convert it to an integer and it will no longer be a string and no longer have those quotes.

endFlowArray.push(+i);

Your "numbers" in flowEnd and dateFlow are actually strings, not numbers.

Answer 3

To convert entire array's data type we can use map():

let numberArray = stringArray.map(Number)

Answer 4

try this:

let numberArray = stringArray.map(el=>parseInt(el))

• ptommasi: That gets the job done, but some formatting wouldn't hurt! :)