<input type="text" name="non" ng-model="non" 
                    onpaste="return false;"onkeyup="if (
                                    this.value.length == 1
                                ) {
                                    this.value = this.value.replace(/[^1-9]/g, '')
                                }
                                else {
                                    this.value = this.value.replace(/\D/g, '')
                                }"onafterpaste="if (
                                    this.value.length == 1) {
                                    this.value = this.value.replace(/[^1-9]/g, '0')
                                }
                                else {
                                    this.value = this.value.replace(/\D/g, '')
                                }" />