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JavaScript: Order Array by Last Name

Posted on 2013-06-11
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Last Modified: 2013-06-12
How can I order this list by last name?

This does NOT work:

 var str = 'X. Michael Goo,Suzy M. Kat,Sal M. Haircut,Scott N. Yuu,Larry B. Huff,Geof L. Mack,David A. Xaa,Brian C. Fuu';
 var people = str.split(',');
 people = people.sort(function(a,b){return a<b;});
 alert(people.join('\n'))

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Question by:hankknight
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Accepted Solution

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hielo earned 350 total points
ID: 39239217
within the function, split the name in "a" and in "b" at the spaces and then compare just the last name (the last item after the split(' ')) -see code below:
 var str = 'X. Michael Goo,Suzy M. Kat,Sal M. Haircut,Scott N. Yuu,Larry B. Huff,Geof L. Mack,David A. Xaa,Brian C. Fuu';
 var people = str.split(',');
 people = people.sort(  function(a,b){
 		var last_a=a.split(' ').pop();
		var last_b=b.split(' ').pop();
		return last_a<last_b?-1:1;
		
		}  );
 alert(people.join('\n'))

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Assisted Solution

by:Rainer Jeschor
Rainer Jeschor earned 150 total points
ID: 39239268
Here we go:
http://jsfiddle.net/EE_RainerJ/ajXyw/

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Expert Comment

by:hielo
ID: 39239289
NOTE: On my first post, if you prefer the sort order to be in descending order then change:
return last_a<last_b?-1:1;

so that the 1 and -1 are swapped:
return last_a<last_b?1:-1;
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