正则表达式使用 AngularJS 删除数字类型输入的加号和减号

Question

I'm trying to remove of my input type number every special character, and I also need that nobody be able to enter a minus (-) or plus (+) sign at the beginning and the end of the input.

I'm using AngularJS. I'll put the example code below.

<div class="input-group">
        <span class="input-group-addon" id="basic-addon1">$</span>
        <input class="form-control" tabindex="1" type="number" min="0"
               step="0.01" ng-model="valorServicio" ng-pattern="/^[0-9]+(\.[0-9]{1,2})?$/" 
               name="valorServicio" required
        /> 
</div>

If someone know the answer I'd appreciate it.

Answer 1

2 things to notice here.

First remove the slashes. In pattern attribute you don't need to put the slashes at both side of the regex (ie /regex/ )

Second you need to wrap this input field in a form to use the browser pattern matching. Or you can also do it manually with js.

There is no other problem in your regex. That works fine