Lodash sortedLastIndexBy method
语法：
_.sortedLastIndexBy(array, value, [iteratee=_.identity])
This method is like _.sortedLastIndex except that it accepts iteratee which is invoked for value and each element of array to compute their sort ranking. The iteratee is invoked with one argument: (value).
参数
array (Array) − The sorted array to inspect.
value (*) − The value to evaluate.
[iteratee=_.identity] (Function) − The iteratee invoked per element.
输出：
(number) − Returns the index at which value should be inserted into array.
实例：
var _ = require('lodash');
var list = [{ 'x': 4 }, { 'x': 1 }];
var result = _.sortedLastIndexBy(list, [{ 'x': 4 }], 'x');
console.log(result);
Save the above program in
tester.js. Run the following command to execute this program.
命令：
输出：
