Lodash update method
语法
_.update(object, path, updater)
This method is like _.set except that accepts updater to produce the value to set. Use _.updateWith to customize path creation. The updater is invoked with one argument: (value).
参数
object (Object) − The object to modify.
path (Array|string) − The path of the property to set.
updater (Function) − The second number in an addition.
输出
(Object) − Returns object.
实例
var _ = require('lodash');
var object = { 'a': [{ 'b': { 'c': 3 } }] };
_.update(object, 'a[0].b.c', function(n) { return n * n; });
console.log(object.a[0].b.c);
Save the above program in
tester.js. Run the following command to execute this program.
Command
输出
