new Vue({
el: "#app",
data: {
number: "01012345678",
},
computed: {
output() {
let value = this.number.replace(/[^0-9\-]/g, '');
if (/^(\d{3})(\d)/.test(value)) {
value = value.replace(/^(\d{3})(\d)/, '$1-$2');
}
if (/^(\d{3}-\d{4})(\d)/.test(value)) {
value = value.replace(/^(\d{3}-\d{4})(\d)/, '$1-$2');
}
return value;
}
},
methods: {},
mounted() {}
})