collect.js some() 方法
some() 方法用于检查给定集合是否包含给定项,并返回相应的布尔值。
句法:
collect(array).some(key/value)
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 some() 方法。 some() 方法将键/值作为参数保存。
返回值:此方法检查给定集合是否包含给定项,并返回相应的布尔值。
下面的示例说明了 collect.js 中的 some() 方法:
示例 1:
Javascript
const collect = require('collect.js');
const collection = collect(['Geeks',
'GFG', 'GeeksforGeeks', 'Welcome']);
const some_val = collection.some('GFG');
console.log(some_val);
Javascript
const collect = require('collect.js');
let obj = [
{
name: 'Rahul',
marks: 88
},
{
name: 'Aditya',
marks: 78
},
{
name: 'Abhishek',
marks: 87
}
];
const collection = collect(obj);
const some_val1 = collection.some(
element => element.name == 'Aditya');
console.log(some_val1);
const some_val2 = collection.some(
element => element.name == 'Shyam');
console.log(some_val2);
输出:
true
示例 2:
Javascript
const collect = require('collect.js');
let obj = [
{
name: 'Rahul',
marks: 88
},
{
name: 'Aditya',
marks: 78
},
{
name: 'Abhishek',
marks: 87
}
];
const collection = collect(obj);
const some_val1 = collection.some(
element => element.name == 'Aditya');
console.log(some_val1);
const some_val2 = collection.some(
element => element.name == 'Shyam');
console.log(some_val2);
输出:
true
false