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1

I have array like this

var Arr = [ 'h78em', 'w145px', 'w13px' ]

I want to sort this array in Numerical Order 

[ 'w13px', 'h78em', 'w145px' ]

For Regular Numerical sorting I use this function 

var sortArr = Arr.sort(function(a,b){
     return a-b;
});

But due to word character in the array this function doesn't work

Is it possible to sort this array ? How do I split/match array ?

share|improve this question
 
"78em", "145px" : those are different units. Why this sort ? Do you want it independently of the unit or should em to pixel conversion occurs ? –  dystroy Aug 30 '12 at 7:59
 
What have you tried? –  Klas Lindbäck Aug 30 '12 at 8:00
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1 Answer

up vote 8 down vote accepted

You can use regular expression to remove all letters when sorting:

var Arr = [ 'h78em', 'w145px', 'w13px' ]​;
var sortArr = Arr.sort(function(a, b) {
    a = a.replace(/[a-z]/g, "");  // or use .replace(/\D/g, "");
    b = b.replace(/[a-z]/g, "");  // to leave the digits only
    return a - b;
});

DEMO: http://jsfiddle.net/8RNKE/

share|improve this answer
1  
Clean and simple :) –  Snake Eyes Aug 30 '12 at 7:58
1  
I would add i so it doesn't only check for lowercase, making it safer. –  sQVe Aug 30 '12 at 8:01
 
@sQVe Good catch. There is also an option to leave only digits using /[\D]/g. However, it depends on the input. –  VisioN Aug 30 '12 at 8:04
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