Lodash教程

Lodash lastIndexOf method

语法:

_.lastIndexOf(array, value, [fromIndex=array.length-1])
This method is like _.indexOf except that it iterates over elements of array from right to left.

参数

array (Array) − The array to inspect. value (*) − The value to search for. [fromIndex=array.length-1] (number) − The index to search from.

输出:

(number) − Returns the index of the matched value, else-1.

实例:

var _ = require('lodash');
var list = [1, 2, 3, 2, 5, 6, 2];
var result = _.lastIndexOf(list,2)
console.log(result);
var result = _.lastIndexOf(list,2,3)
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:

6
3
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