How do i use Regular expression in ng-pattern to avoid certain special character?

I have to avoid some some special characters in ng-pattern. I can able to avoid all special characters by using following code

ng-pattern="/^[a-zA-Z0-9]*$/"

But I have to avoid only these charecters

%;:'",<>

How to do write ng-pattern

Update:

<input type="text" class="txt_box" ng-disabled="filechoosen" name="file_name" ng-pattern="/^[^%;:\x27\x22,<>{}[\]\/]*$/" ng-model="filenameedit" id="filenameedit">
<div style="color:Red"  ng-show="file_name.$error.pattern ">These charecters are not allowed</div>

Solution

You may use

ng-pattern="/^[^%;:\x27\x22,<>{}[\]\/]*$/"

Note that ' is turned to \x27 and " to \x22 to be used freely in an attribute value.

Details

^ - start of string
[^ - start of the negated character class matching any chars other than...
- %;:\x27\x22,<>{}[\]\/ - %, ;, :, ', ", <, >, {, }, [, ] and /
]* - zero or more times
$ - end of string.

See the JS demo:

var app = angular.module("angularApp", [])
.controller("myConfigGenCtrl", function($scope) {
    $scope.subnet = '';
});

<!DOCTYPE html>
<html ng-app="angularApp">

<head>
  <script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular.min.js"></script>
</head>

<body ng-controller="myConfigGenCtrl">
  <div class="ipfield">
   <form  name="frm">
    <label class="plclabel">File Name</label>
    <input type="text" class="txt_box" ng-disabled="filechoosen" name="file_name" ng-pattern="/^[^%;:\x27\x22,<>{}[\]\/]*$/" ng-model="name" id="filenameedit">
    <div style="color:red" ng-show="frm.file_name.$error.pattern">Error: % ; : ' " &lt; &gt; { } [ ] and / are not allowed!</div>
   </form>
  </div>
</body>
</html>