Join Array of Objects by Property using lodash

Question

Is there a way using lodash or another library to join an array of objects?

I'm looking for a readymade function not a for loop.

For example:

[{a: 1}, {a:3}, {a: 4}]
      //Run a function by specifing the property a and setting "," as the delimeter
Get 1,3,4

Kevin Le · Accepted Answer · 2016-07-28 23:22:30Z

10

Here is your lodash answer

var arr = [{a: 1}, {a:3}, {a: 4}];
var s = _.map(arr, 'a').join(',');
//s == '1,2,3,4'

answered Jul 28, 2016 at 23:22

Kevin Le

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Comments

Rob M. · Accepted Answer · 2016-07-28 23:18:47Z

6

You don't need lodash for this, you can just use map and join:

let collection = [{a: 1}, {a:3}, {a: 4}];
alert(collection.map(item => item.a).join(','));

answered Jul 28, 2016 at 23:18

Rob M.

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hehe ecma script... lucky man since you are allowed to use it =)

@java_newbie you are absolutely right, maybe you can get your team to use a transpiler and some polyfills - worth the headache!