I would like to add a validation for an html input to accept only numbers, a comma or a decimal. This is for EU based prices where a user would like to enter a price in the format of 3,22 or 3.22. Both should be allowed. But the user cannot enter a combination of both decimal or comma. I would like to handle this using regex as I find it most suitable. This is what I could find.
<input class="form-control price_field" type="text" id="article_selling_price" name="article_selling_price">
A JS code I found to handle only comma
$(".price_field").on("keyup", checkKey);
function checkKey() {
var clean = this.value.replace(/[^0-9,]/g, "").replace(/(,.*?),(.*,)?/, "$1");
if (clean !== this.value) this.value = clean;
}
Is there a way I can use something similar to achieve my requirement? I am not so familiar with regex
I managed to get it to work a different way by checking charCode and also a keyup function to replace the dot with comma.
<input class="form-control price_field" onkeypress="return isNumberKey(this, event);" type="text" id="price_search" name="price_search">
function isNumberKey(txt, evt) {
var charCode = (evt.which) ? evt.which : evt.keyCode;
if (charCode == 44) {
//check if previously there was a decimal
if (txt.value.indexOf('.') > 0) {
return false;
}
//Check if the text already contains the , character
if (txt.value.indexOf(',') === -1) {
return true;
} else {
return false;
}
} else if(charCode == 46){
//check if previously there was a comma
if (txt.value.indexOf(',') > 0) {
return false;
}
if (txt.value.indexOf('.') === -1) {
return true;
} else {
return false;
}
} else {
if (charCode > 31 &&
(charCode < 48 || charCode > 57))
return false;
}
return true;
}
$(".price_field").on("keyup", checkKey);
function checkKey() {
if (this.value.indexOf('.') > 0) {
this.value = this.value.replace(".", ",");
}
}