Lodash takeWhile method
语法:
_.takeWhile(array, [predicate=_.identity])
Creates a slice of array with elements taken from the beginning. Elements are taken until predicate returns falsey. The predicate is invoked with three arguments: (value, index, array).
参数
array (Array) − The array to query.
[predicate=_.identity] (Function) − The function invoked per iteration.
输出:
(Array) − Returns the slice of array.
实例:
var _ = require('lodash');
var users = [
{ 'user': 'Mark', 'active': false },
{ 'user': 'Joe', 'active': true },
{ 'user': 'Jake', 'active': false }
];
var result = _.takeWhile(users, function(o) { return !o.active; });
console.log(result);
Save the above program in
tester.js. Run the following command to execute this program.
命令:
输出:
[ { user: 'Mark', active: false } ]