How to Convert a String with Commas to an Array in JavaScript?

Converting String with Commas to Array in JavaScript

Converting a string such as "0,1" to a JavaScript array can be challenging. Let's address the code example provided:

var string = "0,1";
var array = [string];
alert(array[0]);

In this scenario, 'alert(array[0])' displays "0,1". To obtain the desired result of an array, we need to convert the string.

Solution Using JSON.parse:

For simple array members, JSON.parse can be leveraged:

var array = JSON.parse("[" + string + "]");

This approach yields an array of numbers:

[0, 1]

Alternative Solution Using .split():

If you prefer to use .split(), you'll obtain an array of strings:

var array = string.split(",");

["0", "1"]

Considerations for Alternative Solution:

Note that .split() can't handle complex data types like undefined or functions. In such cases, eval() or a JavaScript parser is required.

To convert the split strings to numbers, you can utilize Array.prototype.map:

var array = string.split(",").map(Number);

This returns an array of numbers:

[0, 1]

To support Array.prototype.map in older browsers, consider shimming it or using a traditional loop.

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