How to arange list of numbers in javascript?

Question

In Python:

 data = range(50,60,2)
 print data
 [50, 52, 54, 56, 58]

How can I do it in js? Looking for simple and shorter way.

var range = (start, end) => [...Array(end - start + 1)].map((_, i) => start + i);

var result = range(50, 60, 2);
print(result);

I don't know python but could you explain what your current code is doing? — www139, Feb 22 '15 at 14:34
It is producing a list between the start and end numbers and with the step given. — Eric Bal, Feb 22 '15 at 14:36
@www139 When 3 numbers: 50, 60, and 2 are given, I have to make a list of numbers between 50 and 60 with step of 2. — Eric Bal, Feb 22 '15 at 14:38
Somebody asked a similar questions knowing the answer for PHP. Some of the answers may help: http://stackoverflow.com/q/3895478/1498309 — makra, Feb 22 '15 at 14:39
@I read that link, but could not make answer for my question. — Eric Bal, Feb 22 '15 at 14:41

Jason · Accepted Answer · 2015-02-22T14:56:25.340

1

You could write your own range function:

var range = function(start, stop, step){
      step = step || 1;
      var arr = [];
      for (var i=start;i<stop;i+=step){
         arr.push(i);
      }
      return arr;
};

edited Feb 22 '15 at 14:56

answered Feb 22 '15 at 14:44

Jason

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Thanks. I got the following error: Variable must be declared with "var": i – Eric Bal Feb 22 '15 at 14:47
updated to fix error. This is probably 1) easier to read, and 2) more efficient than using map. – Jason Feb 22 '15 at 14:57

How to arange list of numbers in javascript?

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