使用lodash _.sortby对具有详细信息的联系人数组进行排序，最后发送空值吗？

Question

I have an array of contacts with details such as email, phone#, etc. These contacts are all sorted by name. However, while every contact must have these details, they do not always have a Name assigned. Is there a simple argument I can add to send these contacts with a null Name value to the end of the list? What I have now.

array=_.sortBy(array,'Name');
return array;

Answer 1

You could use a function in the iteratees for sorting falsy values to bottom.

 var users = [{ name: null }, { name: 'susan' }, { name: 'barney' }, { name: 'fred' }, { name: 'jane' }, { name: null }]; console.log(_.sortBy(users, [({ name }) => name === null, 'name'])); 

 .as-console-wrapper { max-height: 100% !important; top: 0; } 

 <script src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.15.0/lodash.min.js"></script> 

Answer 2

I don't think there's a way for lodash, but it's easy enough with plain js

 let arr = [{ name: null }, { name: 'foo' }, { name: 'bar' }, { name: null }]; arr.sort((a, b) => a.name === null ? Number.MAX_SAFE_INTEGER : a.name.localeCompare(b.name)); console.log(arr);