使用mongo风格的语法从数组而不是Mongo集合中查询内存中的JavaScript对象？

Question

In mongo I can construct a query like below to return objects with height not equal to 4 from a collection.

var mongoQuery = { height: { "$ne": 4 } };

But say I have an in-memory array of objects and want to query from them the same way:

var myArr = [{height: 5}, {height: 4}, {height:3}]

Are there any existing libraries or ways for me to use similar syntax on arrays instead of mongo collections? Eg:

var result = someUtil(myArr, {height: {"$ne": 4}});  //returns all objects with height != 4

EDIT: I don't want to do != 4 , but rather generally translate from any Mongo operator (eg $eq , $ge , etc.)

Answer 1

Please take a look at sift.js . That is what you want. But use it if you really need mongodb like queries, otherwise use another library like lodash or underscore.

Answer 2

结帐下划线库。

var result = _.find(myArr, function(item){ return item.height == 4 });