Lodash教程

Lodash every method

语法:

_.every(collection, [predicate=_.identity])
Checks if predicate returns truthy for all elements of collection. Iteration is stopped once predicate returns falsey. The predicate is invoked with three arguments: (value, index|key, collection).

参数:

collection (Array|Object) − The collection to iterate over. [predicate=_.identity] (Function) − The function invoked per iteration.

输出:

(boolean) − Returns true if all elements pass the predicate check, else false.

例子:

var _ = require('lodash');
var list = [
   { 'user': 'Joe', 'age': 36, 'active': false },
   { 'user': 'Jake', 'age': 40, 'active': false }
];
 
var result = _.every(list, ['active', false]);
console.log(result);
Save the above program in tester.js. Run the following command to execute this program.

命令:

\>node tester.js

输出:

true
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