Getting “compiled with warnings” for using regular expression









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iI'm getting compiled with warnings alert.
this is the message.



Compiled with warnings.



./src/components/register/register.js
Line 5: Unnecessary escape character: $ no-useless-escape
Line 5: Unnecessary escape character: ^ no-useless-escape
Line 5: Unnecessary escape character: * no-useless-escape


this is the code on line 5. I'm using it to check if a password contains 1 upper case, 1 lower case, 1 number, 1 special character and if its longer than 8 characters.



const passwordRegex = RegExp(/^(?=.*[a-z])(?=.*[A-Z])(?=.*[0-9])(?=.*[!@#$%^&*])(?=.8,)/);


I'm wondering why am I getting this alert? and how do I make it go away?










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  • 1




    Well, the warnings are telling you what's wrong. Why not just heed what they say? The escapes they mention are unnecessary (because they occur inside a range).
    – Utkanos
    Nov 10 at 18:29










  • because I'm new to this. the reason why I asked...
    – ylimes
    Nov 10 at 18:33










  • I can appreciate that - we're all new to things are some time. But in your case the warnings are telling you exactly what's wrong. Duskwuff's answer expounds on why these characters don't need escaping.
    – Utkanos
    Nov 10 at 18:33















up vote
-2
down vote

favorite












iI'm getting compiled with warnings alert.
this is the message.



Compiled with warnings.



./src/components/register/register.js
Line 5: Unnecessary escape character: $ no-useless-escape
Line 5: Unnecessary escape character: ^ no-useless-escape
Line 5: Unnecessary escape character: * no-useless-escape


this is the code on line 5. I'm using it to check if a password contains 1 upper case, 1 lower case, 1 number, 1 special character and if its longer than 8 characters.



const passwordRegex = RegExp(/^(?=.*[a-z])(?=.*[A-Z])(?=.*[0-9])(?=.*[!@#$%^&*])(?=.8,)/);


I'm wondering why am I getting this alert? and how do I make it go away?










share|improve this question



















  • 1




    Well, the warnings are telling you what's wrong. Why not just heed what they say? The escapes they mention are unnecessary (because they occur inside a range).
    – Utkanos
    Nov 10 at 18:29










  • because I'm new to this. the reason why I asked...
    – ylimes
    Nov 10 at 18:33










  • I can appreciate that - we're all new to things are some time. But in your case the warnings are telling you exactly what's wrong. Duskwuff's answer expounds on why these characters don't need escaping.
    – Utkanos
    Nov 10 at 18:33













up vote
-2
down vote

favorite









up vote
-2
down vote

favorite











iI'm getting compiled with warnings alert.
this is the message.



Compiled with warnings.



./src/components/register/register.js
Line 5: Unnecessary escape character: $ no-useless-escape
Line 5: Unnecessary escape character: ^ no-useless-escape
Line 5: Unnecessary escape character: * no-useless-escape


this is the code on line 5. I'm using it to check if a password contains 1 upper case, 1 lower case, 1 number, 1 special character and if its longer than 8 characters.



const passwordRegex = RegExp(/^(?=.*[a-z])(?=.*[A-Z])(?=.*[0-9])(?=.*[!@#$%^&*])(?=.8,)/);


I'm wondering why am I getting this alert? and how do I make it go away?










share|improve this question















iI'm getting compiled with warnings alert.
this is the message.



Compiled with warnings.



./src/components/register/register.js
Line 5: Unnecessary escape character: $ no-useless-escape
Line 5: Unnecessary escape character: ^ no-useless-escape
Line 5: Unnecessary escape character: * no-useless-escape


this is the code on line 5. I'm using it to check if a password contains 1 upper case, 1 lower case, 1 number, 1 special character and if its longer than 8 characters.



const passwordRegex = RegExp(/^(?=.*[a-z])(?=.*[A-Z])(?=.*[0-9])(?=.*[!@#$%^&*])(?=.8,)/);


I'm wondering why am I getting this alert? and how do I make it go away?







javascript reactjs






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edited Nov 10 at 18:25

























asked Nov 10 at 18:17









ylimes

2216




2216







  • 1




    Well, the warnings are telling you what's wrong. Why not just heed what they say? The escapes they mention are unnecessary (because they occur inside a range).
    – Utkanos
    Nov 10 at 18:29










  • because I'm new to this. the reason why I asked...
    – ylimes
    Nov 10 at 18:33










  • I can appreciate that - we're all new to things are some time. But in your case the warnings are telling you exactly what's wrong. Duskwuff's answer expounds on why these characters don't need escaping.
    – Utkanos
    Nov 10 at 18:33













  • 1




    Well, the warnings are telling you what's wrong. Why not just heed what they say? The escapes they mention are unnecessary (because they occur inside a range).
    – Utkanos
    Nov 10 at 18:29










  • because I'm new to this. the reason why I asked...
    – ylimes
    Nov 10 at 18:33










  • I can appreciate that - we're all new to things are some time. But in your case the warnings are telling you exactly what's wrong. Duskwuff's answer expounds on why these characters don't need escaping.
    – Utkanos
    Nov 10 at 18:33








1




1




Well, the warnings are telling you what's wrong. Why not just heed what they say? The escapes they mention are unnecessary (because they occur inside a range).
– Utkanos
Nov 10 at 18:29




Well, the warnings are telling you what's wrong. Why not just heed what they say? The escapes they mention are unnecessary (because they occur inside a range).
– Utkanos
Nov 10 at 18:29












because I'm new to this. the reason why I asked...
– ylimes
Nov 10 at 18:33




because I'm new to this. the reason why I asked...
– ylimes
Nov 10 at 18:33












I can appreciate that - we're all new to things are some time. But in your case the warnings are telling you exactly what's wrong. Duskwuff's answer expounds on why these characters don't need escaping.
– Utkanos
Nov 10 at 18:33





I can appreciate that - we're all new to things are some time. But in your case the warnings are telling you exactly what's wrong. Duskwuff's answer expounds on why these characters don't need escaping.
– Utkanos
Nov 10 at 18:33













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1
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The warning is pointing out -- correctly -- that the characters $, ^, and * do not need to be escaped in the character class [!@#$%^&*]. The only characters with special meanings in this context are [, ], -, and .






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  • thank you for explaining
    – ylimes
    Nov 10 at 18:35










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up vote
1
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The warning is pointing out -- correctly -- that the characters $, ^, and * do not need to be escaped in the character class [!@#$%^&*]. The only characters with special meanings in this context are [, ], -, and .






share|improve this answer




















  • thank you for explaining
    – ylimes
    Nov 10 at 18:35














up vote
1
down vote













The warning is pointing out -- correctly -- that the characters $, ^, and * do not need to be escaped in the character class [!@#$%^&*]. The only characters with special meanings in this context are [, ], -, and .






share|improve this answer




















  • thank you for explaining
    – ylimes
    Nov 10 at 18:35












up vote
1
down vote










up vote
1
down vote









The warning is pointing out -- correctly -- that the characters $, ^, and * do not need to be escaped in the character class [!@#$%^&*]. The only characters with special meanings in this context are [, ], -, and .






share|improve this answer












The warning is pointing out -- correctly -- that the characters $, ^, and * do not need to be escaped in the character class [!@#$%^&*]. The only characters with special meanings in this context are [, ], -, and .







share|improve this answer












share|improve this answer



share|improve this answer










answered Nov 10 at 18:30









duskwuff

145k19176229




145k19176229











  • thank you for explaining
    – ylimes
    Nov 10 at 18:35
















  • thank you for explaining
    – ylimes
    Nov 10 at 18:35















thank you for explaining
– ylimes
Nov 10 at 18:35




thank you for explaining
– ylimes
Nov 10 at 18:35

















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