lodashjs：JS实用工具库

文档：https://www.lodashjs.com/

安装

npm i --save lodash

使用示例

var _ = require("lodash");

// 拆分数组
_.chunk(["a", "b", "c", "d"], 2);
// [ [ 'a', 'b' ], [ 'c', 'd' ] ]

// 过滤掉假值
console.log(_.compact([0, 1, false, 2, "", 3]));
// => [1, 2, 3]

// 打乱集合
console.log(_.shuffle([1, 2, 3]));
// [ 2, 3, 1 ]

// 查找数据
var users = [
  { id: 1, user: "barney" },
  { id: 2, user: "fred" },
  { id: 3, user: "pebbles" }
];

console.log(
  _.find(users, function(user) {
    return user.id == 1;
  })
);
// { id: 1, user: 'barney' }


// 浅拷贝
var objects = [{ a: 1 }, { b: 2 }];

var shallow = _.clone(objects);
console.log(shallow[0] === objects[0]);
// => true

// 深拷贝
var objects = [{ a: 1 }, { b: 2 }];

var deep = _.cloneDeep(objects);
console.log(deep[0] === objects[0]);
// => false