how to mask input in html as phone numbr
/**
* charCode [48,57] Numbers 0 to 9
* keyCode 46 "delete"
* keyCode 9 "tab"
* keyCode 13 "enter"
* keyCode 116 "F5"
* keyCode 8 "backscape"
* keyCode 37,38,39,40 Arrows
* keyCode 10 (LF)
*/
function validate_int(myEvento) {
if ((myEvento.charCode >= 48 && myEvento.charCode <= 57) || myEvento.keyCode == 9 || myEvento.keyCode == 10 || myEvento.keyCode == 13 || myEvento.keyCode == 8 || myEvento.keyCode == 116 || myEvento.keyCode == 46 || (myEvento.keyCode <= 40 && myEvento.keyCode >= 37)) {
dato = true;
} else {
dato = false;
}
return dato;
}
function phone_number_mask() {
var myMask = "(___) ___-____";
var myCaja = document.getElementById("phone");
var myText = "";
var myNumbers = [];
var myOutPut = ""
var theLastPos = 1;
myText = myCaja.value;
//get numbers
for (var i = 0; i < myText.length; i++) {
if (!isNaN(myText.charAt(i)) && myText.charAt(i) != " ") {
myNumbers.push(myText.charAt(i));
}
}
//write over mask
for (var j = 0; j < myMask.length; j++) {
if (myMask.charAt(j) == "_") { //replace "_" by a number
if (myNumbers.length == 0)
myOutPut = myOutPut + myMask.charAt(j);
else {
myOutPut = myOutPut + myNumbers.shift();
theLastPos = j + 1; //set caret position
}
} else {
myOutPut = myOutPut + myMask.charAt(j);
}
}
document.getElementById("phone").value = myOutPut;
document.getElementById("phone").setSelectionRange(theLastPos, theLastPos);
}
document.getElementById("phone").onkeypress = validate_int;
document.getElementById("phone").onkeyup = phone_number_mask;
