javascript - ng-pattern allows '+' character when regex limits to digits -

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am using regex /^[0-9]+$/ limit input of text box accept numbers. it's working fine when types +124 it's not setting text box invalid.

<form name="myform" novalidate>   <input type="number" ng-model="age" name="age" ng-pattern="/^[0-9]+$/" />   <h3>valid status : {{myform.age.$valid}}</h3> </form>

input: 123 output: myform.age.$valid - true

input: -123 output: myform.age.$valid - false

input: +123 output: myform.age.$valid - true (shouldn't true)

https://plnkr.co/edit/3ove6qiwgjozub3hyfq5?p=preview

if want make pattern work, need set type attribute text. since want let users type only digits input field, add onkeypress validation:

<input type="text"  onkeypress="return (event.charcode == 8 || event.charcode == 0) ? null : event.charcode >= 48 && event.charcode <= 57" ng-model="age" name="age" ng-pattern="/^[0-9]+$/" />

actually, won't need ng-pattern regex then.


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