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In addition to a forum post - JS Phone format

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var arrEl = Array.from(document.querySelectorAll('#InsertRecordMobile_, #InsertRecordHome_Telephone_'));
let regExp = /^[0-9]+$/;
arrEl.forEach(function(el) {
el.maxLength = 14;

el.addEventListener('input', function(v_e) {
if (regExp.test(v_e.key)) {
this.value = this.value.substr(0, this.value.length - 1);
return false;

let v_value = (this.value.replace(/[^\d]/g, ''));
console.log(v_value, this.value);
if (v_value.length >= 7 && v_value.length < 10) {
this.value = (v_value.substring(0, 3) + "-" + v_value.substring(3, 7) + v_value.substring(7, v_value.length));
} else if (v_value.length >= 10) {
this.value = ("(" + v_value.substring(0, 3) + ") " + v_value.substring(3, 6) + "-" + v_value.substring(6, 10) +v_value.substring(10, v_value.length));

This script is from the link:

I just want to share that the blue colored text are the ID of the fields in your current DataPage where you can apply this code. 

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Hi All - In relation to Caspio's new feature of Worldwide SMS Notifications, if you would like your input phone number fields to be automatically formatted - you can use the International Telephone Input plugin. This JavaScript plugin is used for entering and validating international telephone numbers. It adds a flag dropdown to any input, detects the user's country, displays a relevant placeholder, and provides formatting/validation methods. To know more of the customization, you can check this link: https://github.com/jackocnr/intl-tel-input

Here's a sample result in DataPage:


After submission in table:


Related articles:


Hope it helps!

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