Lodash fill method
语法：
_.fill(array, value, [start=0], [end=array.length])
Fills elements of array with value from start up to, but not including, end.
参数
array (Array) − The array to fill.
value (*) − The value to fill array with.
[start=0] (number) − The start position.
[end=array.length] (number) − The end position.
输出：
(Array) − Returns array.
实例：
var _ = require('lodash');
var numbers = [5, 6, 7, 8];
_.fill(numbers, 'a');
console.log(numbers);
_.fill(numbers, '*', 1,3);
console.log(numbers);
Save the above program in
tester.js. Run the following command to execute this program.
命令：
输出：
[ 'a', 'a', 'a', 'a' ]
[ 'a', '*', '*', 'a' ]
