Characters ignored in strings when doing a non strict comparison

This vector shows what characters are ignored when comparing a string without strict comparison

Created Jun 18, 2024

Updated May 27, 2025

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CategoryCharacter Encoding

VisibilityPublic

TypeJS

CharsetUTF-8

Template used:

"$[chr]1337"==1337&&log($[i])

Sample payloads

"0x091337"==1337&&alert(9)

"0x0B1337"==1337&&alert(11)

"0x0C1337"==1337&&alert(12)

" 1337"==1337&&alert(32)

"+1337"==1337&&alert(43)

"01337"==1337&&alert(48)

" 1337"==1337&&alert(160)

" 1337"==1337&&alert(5760)

" 1337"==1337&&alert(8192)

" 1337"==1337&&alert(8193)

" 1337"==1337&&alert(8194)

" 1337"==1337&&alert(8195)

" 1337"==1337&&alert(8196)

" 1337"==1337&&alert(8197)

" 1337"==1337&&alert(8198)

" 1337"==1337&&alert(8199)

" 1337"==1337&&alert(8200)

" 1337"==1337&&alert(8201)

" 1337"==1337&&alert(8202)

" 1337"==1337&&alert(8232)