convert array of strings into array of ints [duplicate]

Question

I collect the current value of a range slider every 1 second and store those values in an array. The value are saved as ["34", "23", "21"]. I need them to save as ints like [6, 4, 3, 2] before I can use them as data in my charts.js canvas. Haven't been able to find a clear answer!

While storing convert it into int using parseInt() function and store. — Achu
– Achu, Commented Dec 15, 2015 at 5:09

Charles Clayton · Accepted Answer · 2015-12-15 05:30:43Z

4

Alternatively, you can one-line it using .map().

var arr = ["34", "23", "21"];
arr.map(Number);
>>> [34, 23, 21]

answered Dec 15, 2015 at 5:30

Charles Clayton

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1 Comment

gafi Over a year ago

I didn't know you can map to a type. Nice!

Shubham Nigam · Accepted Answer · 2015-12-15 06:31:47Z

1

You can use javscript function parseInt() to acheive it

for example:-

var x=["1","2","3","4"]
x.forEach(function(item){
 console.log(parseInt(x,10));
});

it will console all numeric values

edited Dec 15, 2015 at 6:31

answered Dec 15, 2015 at 5:12

Shubham Nigam

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2 Comments

gafi Over a year ago

always use parseInt with radix spcified parseInt(x,10) as some old browsers may have unexpected behavior

Shubham Nigam Over a year ago

@Gaafar i agree with you,providing radix would be a plus point as exceptional handling point of view.

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