Lodash _.snapshot() 方法
Lodash是一个基于 underscore.js 的 JavaScript 库。 Lodash 有助于处理数组、字符串、对象、数字等。
_.snapshot() 方法用于对给定对象进行深度快照或克隆。
句法:
_.snapshot( obj )
参数:此方法需要一个对象来创建一个深度克隆。
返回值:此方法返回克隆的对象。
注意:这在普通 JavaScript 中不起作用,因为它需要安装 lodash contrib 库。 Lodash contrib 库可以使用npm install lodash-contrib –save 安装。
示例 1:
Javascript
// Defining the lodash-contrib variable
var _ = require('lodash-contrib');
// The given object
var given_object =
{ "a": 100, "b": 200, "c": 300 };
// Using the _.snapshot() method
// to create the deep clone
var cloned_obj = _.snapshot(given_object);
console.log("Cloned Object: ", cloned_obj);
Javascript
// Defining the lodash-contrib variable
var _ = require('lodash-contrib');
// The given array
var given_array = [5, 10, 15, 20, 25];
// Using the _.snapshot() method
// to create the deep clone
var cloned_arr = _.snapshot(given_array);
console.log("Cloned Array: ", cloned_arr);
Javascript
// Defining the lodash-contrib variable
var _ = require('lodash-contrib');
// The given string
var given_string = "GeeksforGeeks"
// Using the _.snapshot() method
// to create the deep clone
var cloned_string = _.snapshot(given_string);
console.log("Cloned String: ", cloned_string);
Javascript
// Defining the lodash-contrib variable
var _ = require('lodash-contrib');
// The given number
var given_number = 789434;
// Using the _.snapshot() method
// to create the deep clone
var cloned_num = _.snapshot(given_number);
console.log("Cloned Number: ", cloned_num);
输出:
Cloned Object: Object {1: "a", 2: "b"}
示例 2:
Javascript
// Defining the lodash-contrib variable
var _ = require('lodash-contrib');
// The given array
var given_array = [5, 10, 15, 20, 25];
// Using the _.snapshot() method
// to create the deep clone
var cloned_arr = _.snapshot(given_array);
console.log("Cloned Array: ", cloned_arr);
输出:
Cloned Object: [1, 2, 3, 4]
示例 3:
Javascript
// Defining the lodash-contrib variable
var _ = require('lodash-contrib');
// The given string
var given_string = "GeeksforGeeks"
// Using the _.snapshot() method
// to create the deep clone
var cloned_string = _.snapshot(given_string);
console.log("Cloned String: ", cloned_string);
输出:
Cloned Object: GeeksforGeeks
示例 4:
Javascript
// Defining the lodash-contrib variable
var _ = require('lodash-contrib');
// The given number
var given_number = 789434;
// Using the _.snapshot() method
// to create the deep clone
var cloned_num = _.snapshot(given_number);
console.log("Cloned Number: ", cloned_num);
输出:
Cloned Object: 10000