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Restricting user to input special-characters using Angular
How to restrict special characters in the input field using angular2/ typescriptHow do you disable browser Autocomplete on web form field / input tag?<button> vs. <input type=“button” />. Which to use?Restrict text box to start with a particular characterHow to restrict characters entered into a textbox using jQueryIs it possible to apply CSS to half of a character?NPM vs. Bower vs. Browserify vs. Gulp vs. Grunt vs. WebpackRestrict Special Characters in HTML & AngularJsHow to restrict Special character in material inputAngular 6 restrict certain alphabetsHow to put a proper error message while entering any alphabet or special character in <input matInput type=“number”>?
.everyoneloves__top-leaderboard:empty,.everyoneloves__mid-leaderboard:empty,.everyoneloves__bot-mid-leaderboard:empty height:90px;width:728px;box-sizing:border-box;
User is allowed to enter all the alphabets and numbers but when the special-characters are entered then it shouldn't be entered in the the text box.
I tried doing this using (ng-pattern-restrict) but it's not working as expected, I think it might be possible that it needs to be imported in
app-module.ts but not working.
HTML FILE
html angular npm
add a comment |
User is allowed to enter all the alphabets and numbers but when the special-characters are entered then it shouldn't be entered in the the text box.
I tried doing this using (ng-pattern-restrict) but it's not working as expected, I think it might be possible that it needs to be imported in
app-module.ts but not working.
HTML FILE
html angular npm
it is an AngularJS package
– Akber Iqbal
Mar 24 at 2:59
Possible duplicate of stackoverflow.com/questions/45072369/…
– Maniraj from Karur
Mar 24 at 4:06
I think rather than restricting user from entering special chars , won't it be good to let them type but invalidate the field & form ?? From user experience perspective, its better rather than disablingkeypress
events . Disabling special chars key press events might force the user to think that "my keyboard has broken keys"
– Shashank Vivek
Mar 24 at 4:19
@ManirajfromKarur it's not duplicate of that query,@Shashankvivek what I'm asking is that I don't want user to let key press and input in the text area instead of showing some error or warning to him.
– Saurabh Kumar
Mar 25 at 5:34
add a comment |
User is allowed to enter all the alphabets and numbers but when the special-characters are entered then it shouldn't be entered in the the text box.
I tried doing this using (ng-pattern-restrict) but it's not working as expected, I think it might be possible that it needs to be imported in
app-module.ts but not working.
HTML FILE
html angular npm
User is allowed to enter all the alphabets and numbers but when the special-characters are entered then it shouldn't be entered in the the text box.
I tried doing this using (ng-pattern-restrict) but it's not working as expected, I think it might be possible that it needs to be imported in
app-module.ts but not working.
HTML FILE
html angular npm
html angular npm
asked Mar 24 at 2:27
Saurabh KumarSaurabh Kumar
175
175
it is an AngularJS package
– Akber Iqbal
Mar 24 at 2:59
Possible duplicate of stackoverflow.com/questions/45072369/…
– Maniraj from Karur
Mar 24 at 4:06
I think rather than restricting user from entering special chars , won't it be good to let them type but invalidate the field & form ?? From user experience perspective, its better rather than disablingkeypress
events . Disabling special chars key press events might force the user to think that "my keyboard has broken keys"
– Shashank Vivek
Mar 24 at 4:19
@ManirajfromKarur it's not duplicate of that query,@Shashankvivek what I'm asking is that I don't want user to let key press and input in the text area instead of showing some error or warning to him.
– Saurabh Kumar
Mar 25 at 5:34
add a comment |
it is an AngularJS package
– Akber Iqbal
Mar 24 at 2:59
Possible duplicate of stackoverflow.com/questions/45072369/…
– Maniraj from Karur
Mar 24 at 4:06
I think rather than restricting user from entering special chars , won't it be good to let them type but invalidate the field & form ?? From user experience perspective, its better rather than disablingkeypress
events . Disabling special chars key press events might force the user to think that "my keyboard has broken keys"
– Shashank Vivek
Mar 24 at 4:19
@ManirajfromKarur it's not duplicate of that query,@Shashankvivek what I'm asking is that I don't want user to let key press and input in the text area instead of showing some error or warning to him.
– Saurabh Kumar
Mar 25 at 5:34
it is an AngularJS package
– Akber Iqbal
Mar 24 at 2:59
it is an AngularJS package
– Akber Iqbal
Mar 24 at 2:59
Possible duplicate of stackoverflow.com/questions/45072369/…
– Maniraj from Karur
Mar 24 at 4:06
Possible duplicate of stackoverflow.com/questions/45072369/…
– Maniraj from Karur
Mar 24 at 4:06
I think rather than restricting user from entering special chars , won't it be good to let them type but invalidate the field & form ?? From user experience perspective, its better rather than disabling
keypress
events . Disabling special chars key press events might force the user to think that "my keyboard has broken keys"– Shashank Vivek
Mar 24 at 4:19
I think rather than restricting user from entering special chars , won't it be good to let them type but invalidate the field & form ?? From user experience perspective, its better rather than disabling
keypress
events . Disabling special chars key press events might force the user to think that "my keyboard has broken keys"– Shashank Vivek
Mar 24 at 4:19
@ManirajfromKarur it's not duplicate of that query,@Shashankvivek what I'm asking is that I don't want user to let key press and input in the text area instead of showing some error or warning to him.
– Saurabh Kumar
Mar 25 at 5:34
@ManirajfromKarur it's not duplicate of that query,@Shashankvivek what I'm asking is that I don't want user to let key press and input in the text area instead of showing some error or warning to him.
– Saurabh Kumar
Mar 25 at 5:34
add a comment |
2 Answers
2
active
oldest
votes
This may help you, by making service and data-binding approach in angular.
Hello.service.ts
public restrictNumeric(e) e.ctrlKey)
return true;
if (e.which === 32)
return false;
if (e.which === 0)
return true;
if (e.which < 33)
return true;
input = String.fromCharCode(e.which);
return !!/[ds]/.test(input);
Hello.html
<input type="tel" (keypress)="restrictNumeric($event)">
1
Thanks for the perfect approach for the question and this really worked @AkashSinghSengar.
– Saurabh Kumar
Mar 26 at 13:35
add a comment |
@Shashank has a valid point of view. What you want to do is disable the entry of special characters from the backend, as well as render the field invalid from the frontend. A hacker knowing what they're doing would easily manipulate the HTTP Request itself rather than the field, making it pretty vulnerable.
However, if you insist on your solution, I would recommend using RegEx. This sample expression might come in handy. That way, whenever the input field detects one of these special characters, it would replace that character with a ''
BTW Thanks Chris for a good suggestion, I really appreciate your approach towards my query. :)
– Saurabh Kumar
Mar 27 at 8:56
add a comment |
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2 Answers
2
active
oldest
votes
2 Answers
2
active
oldest
votes
active
oldest
votes
active
oldest
votes
This may help you, by making service and data-binding approach in angular.
Hello.service.ts
public restrictNumeric(e) e.ctrlKey)
return true;
if (e.which === 32)
return false;
if (e.which === 0)
return true;
if (e.which < 33)
return true;
input = String.fromCharCode(e.which);
return !!/[ds]/.test(input);
Hello.html
<input type="tel" (keypress)="restrictNumeric($event)">
1
Thanks for the perfect approach for the question and this really worked @AkashSinghSengar.
– Saurabh Kumar
Mar 26 at 13:35
add a comment |
This may help you, by making service and data-binding approach in angular.
Hello.service.ts
public restrictNumeric(e) e.ctrlKey)
return true;
if (e.which === 32)
return false;
if (e.which === 0)
return true;
if (e.which < 33)
return true;
input = String.fromCharCode(e.which);
return !!/[ds]/.test(input);
Hello.html
<input type="tel" (keypress)="restrictNumeric($event)">
1
Thanks for the perfect approach for the question and this really worked @AkashSinghSengar.
– Saurabh Kumar
Mar 26 at 13:35
add a comment |
This may help you, by making service and data-binding approach in angular.
Hello.service.ts
public restrictNumeric(e) e.ctrlKey)
return true;
if (e.which === 32)
return false;
if (e.which === 0)
return true;
if (e.which < 33)
return true;
input = String.fromCharCode(e.which);
return !!/[ds]/.test(input);
Hello.html
<input type="tel" (keypress)="restrictNumeric($event)">
This may help you, by making service and data-binding approach in angular.
Hello.service.ts
public restrictNumeric(e) e.ctrlKey)
return true;
if (e.which === 32)
return false;
if (e.which === 0)
return true;
if (e.which < 33)
return true;
input = String.fromCharCode(e.which);
return !!/[ds]/.test(input);
Hello.html
<input type="tel" (keypress)="restrictNumeric($event)">
edited Mar 26 at 13:39
Saurabh Kumar
175
175
answered Mar 26 at 13:33
Akash Singh SengarAkash Singh Sengar
156622
156622
1
Thanks for the perfect approach for the question and this really worked @AkashSinghSengar.
– Saurabh Kumar
Mar 26 at 13:35
add a comment |
1
Thanks for the perfect approach for the question and this really worked @AkashSinghSengar.
– Saurabh Kumar
Mar 26 at 13:35
1
1
Thanks for the perfect approach for the question and this really worked @AkashSinghSengar.
– Saurabh Kumar
Mar 26 at 13:35
Thanks for the perfect approach for the question and this really worked @AkashSinghSengar.
– Saurabh Kumar
Mar 26 at 13:35
add a comment |
@Shashank has a valid point of view. What you want to do is disable the entry of special characters from the backend, as well as render the field invalid from the frontend. A hacker knowing what they're doing would easily manipulate the HTTP Request itself rather than the field, making it pretty vulnerable.
However, if you insist on your solution, I would recommend using RegEx. This sample expression might come in handy. That way, whenever the input field detects one of these special characters, it would replace that character with a ''
BTW Thanks Chris for a good suggestion, I really appreciate your approach towards my query. :)
– Saurabh Kumar
Mar 27 at 8:56
add a comment |
@Shashank has a valid point of view. What you want to do is disable the entry of special characters from the backend, as well as render the field invalid from the frontend. A hacker knowing what they're doing would easily manipulate the HTTP Request itself rather than the field, making it pretty vulnerable.
However, if you insist on your solution, I would recommend using RegEx. This sample expression might come in handy. That way, whenever the input field detects one of these special characters, it would replace that character with a ''
BTW Thanks Chris for a good suggestion, I really appreciate your approach towards my query. :)
– Saurabh Kumar
Mar 27 at 8:56
add a comment |
@Shashank has a valid point of view. What you want to do is disable the entry of special characters from the backend, as well as render the field invalid from the frontend. A hacker knowing what they're doing would easily manipulate the HTTP Request itself rather than the field, making it pretty vulnerable.
However, if you insist on your solution, I would recommend using RegEx. This sample expression might come in handy. That way, whenever the input field detects one of these special characters, it would replace that character with a ''
@Shashank has a valid point of view. What you want to do is disable the entry of special characters from the backend, as well as render the field invalid from the frontend. A hacker knowing what they're doing would easily manipulate the HTTP Request itself rather than the field, making it pretty vulnerable.
However, if you insist on your solution, I would recommend using RegEx. This sample expression might come in handy. That way, whenever the input field detects one of these special characters, it would replace that character with a ''
answered Mar 24 at 7:25
ChrisChris
328115
328115
BTW Thanks Chris for a good suggestion, I really appreciate your approach towards my query. :)
– Saurabh Kumar
Mar 27 at 8:56
add a comment |
BTW Thanks Chris for a good suggestion, I really appreciate your approach towards my query. :)
– Saurabh Kumar
Mar 27 at 8:56
BTW Thanks Chris for a good suggestion, I really appreciate your approach towards my query. :)
– Saurabh Kumar
Mar 27 at 8:56
BTW Thanks Chris for a good suggestion, I really appreciate your approach towards my query. :)
– Saurabh Kumar
Mar 27 at 8:56
add a comment |
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it is an AngularJS package
– Akber Iqbal
Mar 24 at 2:59
Possible duplicate of stackoverflow.com/questions/45072369/…
– Maniraj from Karur
Mar 24 at 4:06
I think rather than restricting user from entering special chars , won't it be good to let them type but invalidate the field & form ?? From user experience perspective, its better rather than disabling
keypress
events . Disabling special chars key press events might force the user to think that "my keyboard has broken keys"– Shashank Vivek
Mar 24 at 4:19
@ManirajfromKarur it's not duplicate of that query,@Shashankvivek what I'm asking is that I don't want user to let key press and input in the text area instead of showing some error or warning to him.
– Saurabh Kumar
Mar 25 at 5:34