How to disallow only characters into input field using Angular.js

Question

I need not to allow only characters to my input field and want to check the validation using Angular.js. My code is below.

<div class="input-group bmargindiv1 col-md-12">
<span class="input-group-addon ndrftextwidth text-right oditek-form" style="width:180px">Longitude:</span>
<div ng-class="{ 'myError': billdata.longitude.$touched && billdata.longitude.$invalid }">
<input type="text" name="longitude" id="longitude" class="form-control oditek-form" placeholder="Add Longitude coordinate" ng-model="longitude"  ng-pattern="/^[0-9]+([,.][0-9]+)?$/" ng-keypress="clearField('businessno');" >
</div>
<span class="input-group-btn">
<a ui-sref="dashboard.customer.view" class="btn btn-success" style="height:30px;" title="Click Here" ng-click="getLongValue();"><i class="fa fa-map-marker" aria-hidden="true"></i></a>
 </span>
</div>

In the above code I have set also some regular expression into ng-pattern but its not allowing the number like -12.345,+2.345 etc . Here I need this field will only allow numbers('ie-1,2...9'),special character like ( only +, -, . etc ).

Answer 1

ng-pattern这种模式应匹配：

ng-pattern="/^[0-9,\.\-\+]+$/"

Answer 2

可能是ng-pattern =“/ [0-9，\\ W] / g”