ng-pattern-restrict | certain inputs based on a regex pattern | Interpreter library
kandi X-RAY | ng-pattern-restrict Summary
kandi X-RAY | ng-pattern-restrict Summary
It is possible that at some points you may want to restrict your user from entering certain values in your web application. Specifically, fields that conform to a very strict set of values. If you decide that it is a good idea for you to restrict what the user can even type in the input, this is the tool for you. This works similar to a masked input, except that no mask is displayed, and the validation is done against a regular expression, which allows you to permit a complex class of values if that's what you need, or to be very specific if that is your necessity.
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Trending Discussions on ng-pattern-restrict
QUESTION
I am very new to Angular2 and cant seem to find my answer anywhere. I have an input (as show below) but I only want it to allow the following:
- A-Z
- a-z
- '
- -
- [SPACE]
I have no idea on how to do this. I have tried ng-pattern="/^[a-zA-Z\s]*$/", pattern="/^[a-zA-Z\s]*$/" and ng-pattern-restrict="/^[a-zA-Z\s]*$/".
HTML
...ANSWER
Answered 2017-Jun-12 at 08:43You need to use following to make pattern work
QUESTION
The below code is not allowing to enter the angle brackets which is good, but it is also not allowing to remove last character from the input box. I should able to make it empty.
...ANSWER
Answered 2020-Feb-25 at 06:34this is right code angle brackets from regex ^((?![<>]).)*$
QUESTION
I am adding a validation on a text box for decimal number (4,2). i tried below code, it works after the decimal point (meaning it's restricting user inputing more than 2 digits after decimal point) but it doesn't restrict user inputing more than 4 digits before the decimal point.
ng-pattern-restrict="^[0-9]{0,4}+(.[0-9]{0,2})?$"
- Valid input: 10.20
- Valid input: 1234.23
- Invalid input: 123456.23
- Invalid input: 1234.23456
ANSWER
Answered 2019-May-26 at 03:14The {0,4} means "0 to 4 of the proceeding pattern". The + means "one or more of the proceeding pattern" and the . means "any character".
So it sounds like you need to drop the + (you already have the count specified in {0,4}) and escape the . to match the literal decimal point.
^[0-9]{0,4}(\.[0-9]{0,2})?$
- 10.20 matches
- 1234.23 matches
- 123456.23 no match
- 1234.23456 no match
Keep in mind this is not a universally acceptable method of validating decimals. Different regions use different symbols for the decimal point, for example.
QUESTION
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
ANSWER
Answered 2019-Mar-24 at 07:25@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 ''
QUESTION
I'm having problems with ng-pattern-restrict
I have an input number field with ng-pattern-restrict = "^. {0,13}? $"
But when I wanted to enter a negative number, I tried two ways:
ng-pattern-restrict = "^ \ - \ d {0,13}? $": This way, the negative number is good, but it does not allow you to enter positive numbers, because the character at the start must be (-)
ng-pattern-restrict = "^ \ d {0,13} (\ - \ d {0,13})? $": this method allows to enter a positive number, but it does not allow you to enter negative numbers, because it requires a number in front
Looking forward to having someone help me the other way,
Thanks and Best Regards
ANSWER
Answered 2018-Jan-11 at 06:42QUESTION
I'm trying to inject ng-pattern-restrict into my AngularJS project. Following the readme of Pattern Restrict:
Finally, add a module reference (typically in app.js) to ngPatternRestrict. e.g.:
In my case, I'm doing it in the controller:
CONTROLLER:
...ANSWER
Answered 2017-May-03 at 08:36If you're using ngRoute then you should have $routeProvider, if using ui-router then it's $stateProvider - which one are you using? Since the error you posted seems to deal directly with $stateProvider I believe it's nothing to do with pattern restrict.
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