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This article introduces the knowledge of "how to sort arrays and object arrays in JS". Many people will encounter this dilemma in the operation of actual cases, so let the editor lead you to learn how to deal with these situations. I hope you can read it carefully and be able to achieve something!

1. Array sorting is realized by sort method in js.

Var arr = [2, 13, 13, 17, 4, 19, and 1]; arr.sort () / / [1,13,17,19,2, 3,4]

If you want to sort the array by size, you need to add a comparison function to the sort () method of js

Var arr = [2 function (a) b) {/ / comparison function return b-a; / / descending, ascending to a-b}) console.log (arr) / / [19, 17, 13, 4, 3, 2, 1]

2. The sort method of js realizes the sorting of object array.

Similar to the usage in an array

Var arr = [{name: "Xiao Ming", age:12}, {name: "Xiao Hong", age:11}, {name: "Xiao Gang", age:15}, {name: "Xiao Hua", age:13}]; function compare (p) {/ / comparison function return function (mjingn) {var a = m [p] Var b = n [p]; return a-b;}} arr.sort (compare ("age")); console.log (arr) / / Ascending order, the result: [{name: "Xiao Hong", age: 11}, {name: "Xiao Ming", age: 12}, {name: "Xiao Hua", age: 13}, "the sorting of arrays and object arrays in JS" ends here. Thank you for reading. If you want to know more about the industry, you can follow the website, the editor will output more high-quality practical articles for you!

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