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@RiodeJaneiroo
Created October 13, 2019 14:46
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[Mask input phone] pure JS #mask #js
window.addEventListener("DOMContentLoaded", function() {
[].forEach.call( document.querySelectorAll('input.wpcf7-tel'), function(input) {
var keyCode;
function mask(event) {
event.keyCode && (keyCode = event.keyCode);
var pos = this.selectionStart;
if (pos < 3) event.preventDefault();
var matrix = "+7 (___) ___-__-__",
i = 0,
def = matrix.replace(/\D/g, ""),
val = this.value.replace(/\D/g, ""),
new_value = matrix.replace(/[_\d]/g, function(a) {
return i < val.length ? val.charAt(i++) || def.charAt(i) : a
});
i = new_value.indexOf("_");
if (i != -1) {
i < 5 && (i = 3);
new_value = new_value.slice(0, i)
}
var reg = matrix.substr(0, this.value.length).replace(/_+/g,
function(a) {
return "\\d{1," + a.length + "}"
}).replace(/[+()]/g, "\\$&");
reg = new RegExp("^" + reg + "$");
if (!reg.test(this.value) || this.value.length < 5 || keyCode > 47 && keyCode < 58) this.value = new_value;
if (event.type == "blur" && this.value.length < 5) this.value = ""
}
input.addEventListener("input", mask, false);
input.addEventListener("focus", mask, false);
input.addEventListener("blur", mask, false);
input.addEventListener("keydown", mask, false)
});
});
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