This is my code
$(currentClass).keypress(function (e) {
if (e.which != 8 && e.which != 0 && (e.which < 48 || e.which > 57)) {
return false;
}
});
The only problem with this is that, every time I hit a key for the first time regardless a letter or a number, it shows up in my content editable span tag. However, the second time I hit a letter key the code works, it only accepts number. I have no idea what is wrong with this code in the first pressing of keys.
Use JQuery's .on() method.
$(currentClass).on("keypress",function (e) {
if (e.which != 8 && e.which != 0 && (e.which < 48 || e.which > 57)) {
return false;
}
});
This is what I used
if ($.inArray($event.keyCode, [46, 8, 9, 27, 13, 110, 190]) !== -1 ||
// Allow: Ctrl+A
($event.keyCode == 65 && $event.ctrlKey === true) ||
// Allow: home, end, left, right
($event.keyCode >= 35 && $event.keyCode <= 39)) {
// let it happen, don't do anything
return;
}
// Ensure that it is a number and stop the keypress
if (($event.shiftKey || ($event.keyCode < 48 || $event.keyCode > 57)) && ($event.keyCode < 96 || $event.keyCode > 105)) {
$event.preventDefault();
}
I was able to solve the problem with this. If their suggestion is not working try this.
Bind Properly your events
$(document).ready(function(){
$(body).on("keypress","currentClass",function (e) {
if (e.which != 8 && e.which != 0 && (e.which < 48 || e.which > 57)) {
return false;
}
});
});
$(currentClass).on('keypress', function (e) {
if (e.which != 8 && e.which != 0 && (e.which < 48 || e.which > 57)) {
e.preventDefault();
alert("pressed");
return false;
}
});
event - on
This might helps you :)
Related
I am writing a code for number field where i have disabled all keys except number keys
function doValidation(event) {
var charCode = event.keyCode;
if (charCode != 190 && charCode != 40 && charCode != 39 && charCode != 38 && charCode != 37 && charCode != 46 && charCode > 31 && (charCode < 48 || charCode > 57) && (charCode < 96 || charCode > 105))
return false;
}
<input type="text" onkeydown="doValidation(event)">
Now i want to enable ctrl+c and ctrl+v in this funtion.
you can do this like below :)
var is_ctrl_pressed = false;
$('#number_input').on('keydown', function(e) {
var code = e.which;
if ((code > 47 && code < 59) || (code > 95 && code < 106) || (is_ctrl_pressed && (code == 67 || code == 86))) {
return true;
} else if (code == 17) {
is_ctrl_pressed = true;
} else {
return false;
}
});
$('#number_input').on('keyup', function(e) {
if (e.which == 17) {
is_ctrl_pressed = false;
}
});
Hope this will be helpful.
$('input[type="number"]').keypress(function(e){
//Numbers 47 to 57 are the key code of digit 0 to 9.
if (![48,49,50,51,52,53,54,55,56,57].includes(e.keyCode)){
e.preventDefault();
}
});
// Disable Right click
document.addEventListener('contextmenu', event => event.preventDefault());
// Disable key down
document.onkeydown = disableSelectCopy;
// Disable mouse down
document.onmousedown = dMDown;
// Disable click
document.onclick = dOClick;
function dMDown(e) { return false; }
function dOClick() { return true; }
function disableSelectCopy(e) {
// current pressed key
var pressedKey = String.fromCharCode(e.keyCode).toLowerCase();
if ((e.ctrlKey && (pressedKey == "c" || pressedKey == "x" || pressedKey == "v" || pressedKey == "a" || pressedKey == "u")) || e.keyCode == 123) {
return false;
}
}
I am new to wordpress developement.I wabt to apply my own validation to contatc form 7.Adding same in Header.php file but getting no result.
adding this for mobile number validation in header.php file
<script type="text/javascript">
$("#field-mobile").keydown(function(event) { // Allow only backspace and delete
if (event.keyCode == 46 || event.keyCode == 8 || event.keyCode == 9) { // let it happen, don't do anything
} else {
// Ensure that it is a number and stop the keypress
if ((event.keyCode < 48 || event.keyCode > 57) && (event.keyCode < 96 || event.keyCode > 105)) {
event.preventDefault();
}
}
});
</script>
That is so simple, the script does not work since your code is run before your input text is exist on DOM.
You should add $(document).ready() function then put your block of codes in that function.
I guess this is should work now:
$(document).ready(function() {
$('#field-mobile').bind('keypress', function(e) {
if (e.keyCode == 46 || e.keyCode == 8 || e.keyCode == 9) { // let it happen, don't do anything
} else {
console.log('else block')
if ((e.keyCode < 48 || e.keyCode > 57) && (e.keyCode < 96 || e.keyCode > 105)) {
e.preventDefault();
}
}
});
});
I have a quantity text box which should not allow negative sign, and '.'
character.
I have tried a jquery block but it allow '.'. I want to block '.' in a text box
$(document).ready(function () {
$('#used_quantity').keypress(function(event) {
if ((event.which != 46 || $(this).val().indexOf('.') != -1) && (event.which < 48 || event.which > 57)) {
event.preventDefault();
}
});
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.0/jquery.min.js"></script>
<input type="text" id="used_quantity">
Do with keydown event.Only match with key value, not with string of the input
Updated
with backspace
$(document).ready(function() {
$('#used_quantity').keydown(function(event) {
if ((event.which != 46) && (event.which < 48 || event.which > 57) && (event.which != 8)) {
event.preventDefault();
}
});
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.0/jquery.min.js"></script>
<input type="text" id="used_quantity">
You need to modify the condition to event.which == 46 || event.which == 45 to ignore the . and the - respectively.
$(document).ready(function() {
$('#used_quantity').keypress(function(event) {
if (event.which == 46 || event.which == 45 || event.which < 48 || event.which > 57) {
event.preventDefault();
}
});
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.0/jquery.min.js"></script>
<input type="text" id="used_quantity">
Please check this code. It will work. Remove
if ((event.which != 46 || $(this).val().indexOf('.') != -1) &&
(event.which < 48 || event.which > 57))
condition to
if ((event.which < 48 || event.which > 57) && event.which != 45) {
Check jsliddle EXAMPLE HERE
Change the condition as (((event.which == 46 || event.which == 45 || $(this).val().indexOf('.') != -1)) || (event.which < 48 || event.which > 57)). on keypress event
$(document).ready(function() {
$('#used_quantity').keypress(function(event) {
if (((event.which == 46 || event.which == 45 || $(this).val().indexOf('.') != -1)) || (event.which < 48 || event.which > 57)) {
event.preventDefault();
}
});
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<input type="text" id="used_quantity">
Try this :
$('#used_quantity').bind("change input", function () {
var value = $(this).val().replace(/([^0-9].*)/g, "");
$(this).val(value);
})
I need to restrict user to input minus symbol. How to do it useing following jQuery I have got?
$("#Age").keydown(function (e) {
// Allow: backspace, delete, tab, escape, enter
if ($(this).val().length <= 2 || $.inArray(e.keyCode, [46, 8, 9, 27, 13, 110]) !== -1 ||
(e.keyCode >= 35 && e.keyCode <= 39)) {
// let it happen, don't do anything
return;
}
else {
event.preventDefault();
}
// Ensure that it is a number and stop the keypress
if ($(this).val().length <= 2 || (e.shiftKey || (e.keyCode < 48 || e.keyCode > 57)) && (e.keyCode < 96 || e.keyCode > 105)) {
e.preventDefault();
}
else {
event.preventDefault();
}
});
}); // end of $
ASCII key codes
Minus symbol ASCII value is 45
$("#Age").keydown(function (e) {
if (e.keyCode != 45) { //it does't allow user to enter minus(-) symbol
..
}
else {
event.preventDefault();
}
}); // end of $
im using javascript to validate keys in textbox. it is not working :(
function numeric(e) {
return ((e.keyCode == 8) ||
(e.keyCode == 9) ||
(e.keyCode > 47 && e.keyCode < 58) ||
(e.keyCode > 36 && e.keyCode < 41) ||
(e.keyCode == 46) ||
(e.keyCode > 95 && e.keyCode < 106) ||
e.keyCode == 190 ||
e.keyCode == 110);
}
help me...
function numeric(e) {
e = e || window.event;
keycode = e.keyCode || e.which;
if(keycode === 13){
alert("cheese");
}
}
I know that in I.E. you can set event.keyCode=0 to suppress the key appearing in the control. But I think you need to trap the onkeydown. Firefox might have an equivalent. This is good because it prevents the key actually "arriving" at the control.
Also keep in mind that you might need to handle combinations of Shift + key and alt + key.
a good debug technique for this sort of thing is to say windows.status = event.keyCode,
and you can see what the keycode is as you type it...
Just try out the following code. I have checked F5 keycode, you can check as you want
function disableKey(event)
{
if (!event) event = window.event;
if (!event) return;
var keyCode = event.keyCode ? event.keyCode : event.charCode;
if (keyCode == 116) {
showMsg("This functionality is disabled.");
window.status = "F5 key detected! Attempting to disabling default response.";
window.setTimeout("window.status='';", 2000);
// Standard DOM (Mozilla):
if (event.preventDefault) event.preventDefault();
//IE (exclude Opera with !event.preventDefault):
if (document.all && event && !event.preventDefault) {
event.cancelBubble = true;
event.returnValue = false;
event.keyCode = 0;
}
return false;
}
}
function setEventListenerForFrame(eventListener)
{
document.getElementById('your_textbox').onkeydown = eventListener;
//frames['frame'].document.onkeypress = eventListener;
}
<body onload="setEventListener(disableKey);">
Try this if you want a numbers only textbox:
function numbercheck(event) {
var unicode = event.charCode; var unicode1 = event.keyCode; if (navigator.userAgent.indexOf("Firefox") != -1 || navigator.userAgent.indexOf("Safari") != -1) {
if (unicode1 != 8) {
if ((unicode >= 48 && unicode <= 57) || unicode1 == 37 || unicode1 == 39 || unicode1 == 35 || unicode1 == 36 || unicode1 == 9 || unicode1 == 46)
{ return true; }
else
{ return false; }
}
}
if (navigator.userAgent.indexOf("MSIE") != -1 || navigator.userAgent.indexOf("Opera") == -1) {
if (unicode1 != 8) {
if (unicode1 >= 48 && unicode1 <= 57)
{ return true; }
else
{ return false; }
}
}
}
And in your textbox call it on the onkeypress event:
onkeypress="return numbercheck(event)"