var list = [ { id : 1234, shop : 'shop1' }, { id : 4312, shop : 'shop2' } ];
I want that only id attributes in object array return as "1234,4312". How can I do?
3
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pluck the ids in a loop, and then join them to a string by commata? Have you tried?Bergi– Bergi2014-06-05 21:20:36 +00:00Commented Jun 5, 2014 at 21:20
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1Divide it up into individual tasks. You want to get the id attributes of objects in an array, and you want to join several things with a comma. Which is these tasks do you not know how to do?Chuck– Chuck2014-06-05 21:21:33 +00:00Commented Jun 5, 2014 at 21:21
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Yes, but it is not easy way. I want to find out easier and alternative methods.egemen– egemen2014-06-05 21:30:03 +00:00Commented Jun 5, 2014 at 21:30
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2 Answers
Even easier:
var list = [ { id : 1234, shop : 'shop1' }, { id : 4312, shop : 'shop2' } ];
ids = list.map(function(obj){
return obj.id
})
If you specifically need a string, add a .toString() to the end of the map call:
ids = list.map(function(obj){
return obj.id
}).toString()
1 Comment
Bergi
OP requires the result to be a commadelimited string.
You have to loop through the array and create a new array. It's actually not that hard:
var list = [ { id : 1234, shop : 'shop1' }, { id : 4312, shop : 'shop2' } ];
var ids = [];
list.forEach(function(obj, index){
ids.push(obj.id);
});
if you want that as a comma delimited string you can simply call ids.toString(); it's the default behavior.
1 Comment
Bergi
You really should use
map instead of forEach. Also, OP requires the result to be a string.