Collect.js dump() 方法
collect.js 中的dump()方法用于打印特定时刻的数据,然后继续执行代码。
句法:
collect.dump()
参数:它不接受任何参数。
返回值:不返回任何值。
示例 1:
Javascript
// Importing the collect.js module
const collect = require('collect.js');
let array = ["a", "b", "c"];
// Making the collection
let collection= collect(array);
// Using dump() method to print
// the data at this moment
collection.dump()
Javascript
// Importing the collect.js module.
const collect = require('collect.js');
let array = ["a", "b", "c", "d", "e"];
// Making the collection
let collection = collect(array);
// Using dump() method to print
// the data at this moment
collection.dump()
.filter((v, k) => v >= "c")
.dump()
输出:
Collection { items: [ 'a', 'b', 'c' ] }
示例 2:
Javascript
// Importing the collect.js module.
const collect = require('collect.js');
let array = ["a", "b", "c", "d", "e"];
// Making the collection
let collection = collect(array);
// Using dump() method to print
// the data at this moment
collection.dump()
.filter((v, k) => v >= "c")
.dump()
输出:
Collection { items: [ 'a', 'b', 'c', 'd', 'e' ] }
Collection { items: [ 'c', 'd', 'e' ] }
参考: https://collect.js.org/api/dump.html