Collect.js pluck() 方法
pluck() 方法用于返回给定键的所有值。
句法:
collect(array).pluck(key)
参数: collect() 方法采用一个参数,该参数转换为集合,然后对其应用 pluck() 方法。 pluck() 方法将密钥作为参数保存。
返回值:此方法返回给定键的所有值。
下面的示例说明了 collect.js 中的 pluck() 方法:
示例 1:
Javascript
const collect = require('collect.js');
let obj = [
{
name: 'Rahul',
dob: '25-10-96',
section: 'A',
score: 98,
},
{
name: 'Aditya',
dob: '25-10-96',
section: 'B',
score: 96,
},
{
name: 'Abhishek',
dob: '16-08-94',
section: 'A',
score: 80
}
];
const collection = collect(obj);
const pluck_val = collection.pluck('name');
console.log(pluck_val.all());
Javascript
const collect = require('collect.js');
let obj = [
{
name: 'Rahul',
dob: '25-10-96'
},
{
name: 'Aditya',
dob: '25-10-96'
},
{
name: 'Abhishek',
dob: '16-08-94'
}
];
const collection = collect(obj);
const pluck_val = collection.pluck('name', 'dob');
console.log(pluck_val.all());
输出:
[ 'Rahul', 'Aditya', 'Abhishek' ]
示例 2:
Javascript
const collect = require('collect.js');
let obj = [
{
name: 'Rahul',
dob: '25-10-96'
},
{
name: 'Aditya',
dob: '25-10-96'
},
{
name: 'Abhishek',
dob: '16-08-94'
}
];
const collection = collect(obj);
const pluck_val = collection.pluck('name', 'dob');
console.log(pluck_val.all());
输出:
{ '25-10-96': 'Aditya', '16-08-94': 'Abhishek' }