简体中文(ZH-CN) English(EN) 繁体中文(ZH-TW) 日本語(JA) 한국어(KO) Melayu(MS) Français(FR) Deutsch(DE)
Home > Web Front-end > JS Tutorial > body text

Example of a simple method to implement array deduplication in JS

黄舟
Release： 2017-03-27 14:34:50
Original
1175 people have browsed it

This article mainly introducesJSA simple method to implement array deduplication, involving traversal, judgment and assignment operations of javascript arrays. The code is very simple and easy to understand, and has certain reference value. Friends in need You can refer to the following

The example of this article describes the simple method of deduplicating arrays in JS. Share it with everyone for your reference, the details are as follows: 

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html>
<head>
<title>JS数组去重</title>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
</head>
<body>
<script>
var arr = [678, 4, 4, 4, 4, 5, 6, 7, 8, 8, 8, 8, 8];
var result = [];
for (var i = 0; i < arr.length; i++) {
 if (result[arr[i]]) {
} else {
  result[arr[i]] = arr[i];
 }
}
console.log(result);
</script>
</body>
</html>
Copy after login

The running effect diagram is as follows:

Example of a simple method to implement array deduplication in JS

The problem occurs, the new array median value corresponds to the index value. There are limitations. Although they can be arranged from small to large.

The above is the detailed content of Example of a simple method to implement array deduplication in JS. For more information, please follow other related articles on the PHP Chinese website!

Related labels：
JS，数组去重
source：php.cn
Previous article：Sample code for JS string statistical operations [traversal, interception, output, calculation] (picture) Next article：Angularjs+bootstrap+table multi-select (select all) code example that supports single-click row selection to implement editing and deletion functions
Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
Latest Articles by Author
Latest Issues
What is the format of the variables in the return value? I am a new learner of php. I found a piece of code: if($x<time()){return[false,'error']...
From 2024-04-06 21:55:20
0
1
778
Add counted duplicate values ​​in filtred array using ...new Set I have an array with duplicate values ​​which I get from API, the following code uses...ne...
From 2024-04-04 19:03:41
0
1
313
The set*** function is called but the re-rendering of the function component is not executed. My script looks like below, after the api gets the item, I want to re-render the component...
From 2024-04-04 09:53:14
0
1
288
How to eliminate specific repeated characters in a string? I have a simple string with some repeating characters. Can someone please help me fix the ...
From 2024-03-31 10:50:33
0
2
368
Inspired by the underscore library, work hard to rewrite the calling function I'm a beginner trying to rewrite the underline function _.invoke. I'm trying to create the...
From 2024-03-31 09:42:10
0
2
356
Related Topics
More>
Popular Recommendations
Popular Tutorials
More>
Related Tutorials
Popular Recommendations
Latest courses
Latest Downloads
More>
Web Effects
Website Source Code
Website Materials
Front End Template
About us Disclaimer Sitemap
php.cn：Public welfare online PHP training，Help PHP learners grow quickly！