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This article mainly shows you "JavaScript how to use sort () to achieve data de-duplication", the content is easy to understand, clear, hope to help you solve your doubts, the following let the editor lead you to study and learn "JavaScript how to use sort () to achieve data de-duplication" this article.

Using sort ()

Function unique (arr) {if (! Array.isArray (arr)) {console.log ('type errorships') Return;} arr = arr.sort () var arrry= [arr [0]]; for (var I = 1; I < arr.length; iTunes +) {if (arr [I]! = = ARR [I-1]) {arrry.push (ARR [I]);} return arrry } var arr = [1 unique (arr)) / / [0,1,15, "NaN", NaN, NaN, {… }, {... }, "a", false, null, true, "true", undefined] / / NaN, {} not deduplicated

Use the sort () sorting method, and then traverse and compare the adjacent elements according to the sorted results.

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