Lodash教程

Lodash includes method

语法:

_.includes(collection, value, [fromIndex=0])
Checks if value is in collection. If collection is a string, it's checked for a substring of value, otherwise SameValueZero is used for equality comparisons. If fromIndex is negative, it's used as the offset from the end of collection.

参数:

collection (Array|Object|string) − The collection to inspect. value (*) − The value to search for. [fromIndex=0] (number) − The index to search from.

输出:

(boolean) − Returns true if value is found, else false.

例子:

var _ = require('lodash');
var list = [1 ,2, 3, 4];
 
var result = _.includes(list, 1);
console.log(result);
result = _.includes('one', 'ne');
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:

true
true
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