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This article mainly shows you "JavaScript how to use includes to achieve array deduplication", the content is easy to understand, clear, hope to help you solve your doubts, the following let Xiaobian lead you to study and learn "JavaScript how to use includes to achieve array deduplication" this article.

Using includes

Function unique (arr) {if (! Array.isArray (arr)) {console.log ('type errorships') Return} var array = []; for (var I = 0; I < arr.length; iTunes +) {if (! array.includes (arr [I])) {/ / includes detects whether the array has a value array.push (ARR [I]) }} return array} var arr = [1pc1, null,null, NaN, NaN,'NaN', 0,0, 'averse,' averse, {}, {}]; console.log (unique (arr)) / / [1, "true", true,15, false, undefined, null, NaN, "NaN", 0, "a", {… }, {... }] / / {} not to repeat all the contents of the article "how JavaScript uses includes to achieve array de-duplication", thank you for reading! I believe we all have a certain understanding, hope to share the content to help you, if you want to learn more knowledge, welcome to follow the industry information channel!

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