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State of JavaScript 2025

機能

構文、ブラウザAPI、その他の機能

構文機能

どの構文機能を使ったことがありますか？
Multiple
0%
20%
40%
60%
80%
100%
01
10,717
02
8,222
03
5,314
04
4,327
05
4,041
06
-1
3,383
07
-1
2,795
08
RegExp.escape
873
09
🚫 該当なし
-3
628
10
Float16Array
533
0%
20%
40%
60%
80%
100%
回答数に占める割合（%）
12,367
95%
10

文字列の機能

どの文字列機能を使ったことがありますか？
Multiple
0%
20%
40%
60%
80%
100%
1
9,642
2
6,036
3
2,754
4
🚫 該当なし
1,774
0%
20%
40%
60%
80%
100%
回答数に占める割合（%）
12,097
93%
10

配列の機能

どの配列機能を使ったことがありますか？
Multiple
0%
20%
40%
60%
80%
100%
1
5,419
2
+1
4,264
3
-1
4,082
4
🚫 該当なし
3,879
5
2,349
6
1,421
7
860
0%
20%
40%
60%
80%
100%
回答数に占める割合（%）
11,604
89%
10

Set Features

Which of these Set features have you used?
Multiple
0%
20%
40%
60%
80%
100%
1
🚫 該当なし
7,328
2
2,561
3
2,487
4
2,243
5
1,216
6
723
7
500
8
420
0%
20%
40%
60%
80%
100%
回答数に占める割合（%）
10,913
84%
10

Object Features

Which of these Object features have you used?
Multiple
0%
20%
40%
60%
80%
100%
1
🚫 該当なし
6,387
2
4,018
0%
20%
40%
60%
80%
100%
回答数に占める割合（%）
10,405
80%
10

非同期の機能

どの非同期機能を使ったことがありますか？
Multiple
0%
20%
40%
60%
80%
100%
1
6,035
2
5,386
3
🚫 該当なし
+1
3,186
4
1,838
0%
20%
40%
60%
80%
100%
回答数に占める割合（%）
11,506
88%
10

ブラウザのAPI

どのブラウザAPIを使ったことがありますか？
Multiple
0%
20%
40%
60%
80%
100%
01
7,595
02
5,740
03
4,061
04
2,759
05
+2
2,522
06
-1
2,517
07
-1
2,505
08
1,989
09
1,599
10
+1
1,446
11
🚫 該当なし
-2
1,367
12
+1
1,267
13
-3
1,242
14
-3
1,116
15
-1
443
16
334
17
-2
274
0%
20%
40%
60%
80%
100%
回答数に占める割合（%）
11,918
92%
10

言語のつらいところ

JavaScript言語に関して、つらいと感じるところは何ですか？
Freeform
Multiple
0%
20%
40%
60%
80%
100%
01
Lack of static typing
02
Dates
+1
03
TypeScript support
+1
04
Browser support
-2
05
ESM & CJS
06
Error handling
07
Performance
08
Standard Library
+1
09
Handling objects
+2
10
Excessive complexity
+6
0%
20%
40%
60%
80%
100%
回答数に占める割合（%）
3,904
30%
20
10

ブラウザAPIのつらいところ

ブラウザAPIに関して、つらいと感じるところは何ですか？
Freeform
Multiple
0%
20%
40%
60%
80%
100%
01
Browser support
02
browser_testing_issues
03
Safari
04
Date management
05
Performance
-1
06
Lack of documentation
-3
07
Excessive complexity
-2
08
Lack of adoption
+3
09
Chrome
10
Firefox issues
-4
0%
20%
40%
60%
80%
100%
回答数に占める割合（%）
2,340
18%
20
10
We asked members of the JavaScript community to share their “pick of the year”

My 2025 Pick: Delba Oliveira

My pick of the year is Delba Oliveira from the Next.js team. Her work across the ecosystem is remarkable. She has a rare ability to make complex topics feel simple while consistently delivering deeply practical guidance for modern Next.js, React and JS.
We asked members of the JavaScript community to share their “pick of the year”

Ankita Kulkarni

Tech Educator

New Proposals

While Temporal still tops the rankings, excitement is down from last year, which makes sense as it has begun its transition from theoretical proposal to actually being implemented in Firefox.

Which of these active JavaScript proposals are you most excited about?
Multiple
0%
20%
40%
60%
80%
100%
01
5,614
02
3,672
03
🚫 該当なし
1,861
04
1,816
05
JSON.parse source text access
+1
1,377
06
Explicit Resource Management
-2
1,244
07
Deferring Module Evaluation
-2
832
08
Decorator Metadata
-1
763
09
523
10
Iterator Sequencing
+2
499
11
Joint Iteration
433
12
-2
427
13
Signals
+1
14
Pipe operator
15
+1
16
Pattern matching
17
Record & Tuple
-1
18
Observable
+1
19
Type Annotations
-2
20
Async Context
21
Static typing
22
その他の回答
139
0%
20%
40%
60%
80%
100%
回答数に占める割合（%）
10,675
82%
10

欠けている機能

No change in ranking in the top 5, but it's notable to see that interest in Signals did drop slightly compared to last year.

どんな機能がJavaScriptに足りてないと思いますか？
Multiple
0%
20%
40%
60%
80%
100%
01
Static typing
6,177
02
Standard Library
5,441
03
Signals
3,339
04
2,943
05
Pattern Matching
2,275
06
Observable
1,595
07
+1
1,192
08
Async Context
+1
1,018
09
+3
709
10
🚫 該当なし
643
11
+1
352
12
Composites
319
13
Error handling
14
Record & Tuple
-7
15
Enums
16
その他の回答
171
0%
20%
40%
60%
80%
100%
回答数に占める割合（%）
11,315
87%
10

Native Types

While 32% of respondents are hoping for in-browser runtime types support in JavaScript, if types are ever officially supported it seems much more likely to be through TypeScript-like type annotations, which came in at number one.

How would you like to see types implemented natively in JavaScript?
0%
20%
40%
60%
80%
100%
1
Type annotations
5,380
2
Runtime types
3,524
3
I would not like to see them implemented
1,170
4
JSDoc-like types
901
5
Similar to TypeScript
6
Type Annotations
7
No opinion
8
その他の回答
105
0%
20%
40%
60%
80%
100%
回答数に占める割合（%）
10,934
84%
10

Pace of Change

This question's aim was to get a rough idea of how well respondents are keeping up with new features, and it shows that most of us struggle to learn about–let alone try out–new language features Hopefully this is something these survey results can help with!

How well are you generally able to keep up with new JavaScript features, such as those mentioned in this survey?
0%
20%
40%
60%
80%
100%
1
I haven't learned about or tried out most features
2,276
2
I've learned about some of the features; but haven't tried them out
3,552
3
I've learned about and tried out some of the features
4,226
4
I've learned about most of the features and tried out some of them
1,269
5
I've learned about and tried out most of the features
292
0%
20%
40%
60%
80%
100%
回答数に占める割合（%）
11,615
89%
2.5
2
10

Reading List

The Reading List lets respondents learn more about specific items post-survey, and this year we tweaked it to support auto-adding items based on survey answers, in addition to letting respondents select items manually. This change led to a much more library-focused list, compared to previous years which included more features.

0%
20%
40%
60%
80%
100%
01
2,702
02
2,296
03
2,004
04
1,882
05
1,825
06
1,817
07
1,782
08
1,768
09
1,475
10
1,450
0%
20%
40%
60%
80%
100%
回答数に占める割合（%）
How many time each item was added to respondent's Reading List, a feature that lets people learn more about specific topics as they take the survey.
8,987
69%
20
10

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