Compare WebAssembly and JavaScript to determine which is better in 2025 for modern web development. This guide explores performance, browser compatibility, use cases, and developer flexibility. Learn when to use WebAssembly for speed-intensive tasks and when JavaScript remains the go-to for dynamic, interactive web applications.

3. Pro
s
WebAssembl
y
I
® Con
s
High
Performance
'&
No DOM
Access
R
«
@
0
Language
Agnostic
Limited
Debugging
Portability
ff
_
Steep Learning
Curve
Security
®
1
Security
Constraints
-::
>
Compact
Format
Heavy Setup
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5. JavaScrip
t
Pro
s
I
® Con
s
@Client & Server-
Side Abilities
Performance
Issues
D .6
0
Rich
Ecosystem
Single-
Threaded
Nature
Event-Driven &
Asynchronous 'a
&
Framework
Fatigue
S-:,.
J
Easy DOM
Manipulation &
&
Security Risks
()Community &
Large
Browser
Inconsistencies
JJ--?
J..
Rich Tools
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-IA.'E!I A.PP OVHOPl..llN I -

6. Which technology to choose for web development in 2025?
JavaScript
Ideal for traditional web
apps and rapid
development
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WebAssembly
Best for performance­
intensive applications and
native code