<v-text-field @keypress="validatePostalCode($event)"></v-text-field>validatePostalCode(evt) {const expect = evt.target.value.toString() + evt.key.toString()if (!/\d/.test(expect)) {evt.preventDefault()} else {return true}},
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<v-text-field @keypress="validatePostalCode($event)"></v-text-field>validatePostalCode(evt) {const expect = evt.target.value.toString() + evt.key.toString()if (!/\d/.test(expect)) {evt.preventDefault()} else {return true}},
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