Convert array of string javascript to array of integer javascript

Question

I have an array,

var array = ["1","2","3","4","5"];

then I need to convert to

var array = [1,2,3,4,5];

How can i convert?

Sebastian Simon · Accepted Answer · 2015-10-06 08:03:11Z

12

Map it to the Number function:

var array = ["1", "2", "3", "4", "5"];
array = array.map(Number);
array; // [1, 2, 3, 4, 5]

answered Oct 6, 2015 at 8:03

Sebastian Simon

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Comments

Community · Accepted Answer · 2020-06-20 09:12:55Z

6

The map() method creates a new array with the results of calling a provided function on every element in this array.

The unary + acts more like parseFloat since it also accepts decimals.

Refer this

Try this snippet:

var array = ["1", "2", "3", "4", "5"];
array = array.map(function(item) {
  return +item;
});
console.log(array);

edited Jun 20, 2020 at 9:12

CommunityBot

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answered Oct 6, 2015 at 8:01

Rayon

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4 Comments

amdixon Over a year ago

good answer, but whats the point of the snippet which expands to nothing ?

Andreas Over a year ago

@amdixon Just open the console (F12) of your browser ;)

amdixon Over a year ago

point taken - it is just slightly faster than copy+pasting it into the console ;)

Sebastian Simon Over a year ago

The unary plus converts things into a number, just like the unary minus converts it into a number and negates it.

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Convert array of string javascript to array of integer javascript

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