I have a simple "onKeyUp" Javascript routine that is supposed to handle adding dashes to an input field to format a phone number, turning "1234567890" into "123-456-7890". However, if the user types too fast the routine apparently doesn't fire, or the event gets lost, I'm not sure. But in that case, the dashes don't get inserted.
Can anyone suggest a fix for this? Here's the routine:
function(event, field) {
// Don't add dashes if user pressed backspace
if (event.keyCode != 8 ) {
if (field.value.length == 3 || field.value.length == 7) {
field.value = field.value + "-";
}
}
};
SOLUTION
var dashes = function(event, field) {
if (event.keyCode != 8 ) {
var arr = field.value.split(''),
l = arr.length;
if(l > 2 && arr[3] != "-") arr.splice(3, 0, "-");
if(l > 6 && arr[7] != "-") arr.splice(7, 0, "-");
field.value = arr.join('');
}
};
var input = document.getElementById('in');
input.addEventListener('keyup',function(event){
dashes(event, input);
});
Related
This is someone else's code and I am quite new to JS so finding it quite difficult to understand.
I'm trying to auto tab to the next input once the maximum limit has been reached.
The problem I'm having is that the input for year is tabbing before the full year has been fully entered.
If someone could point me to the right direction that would be of great help.
JS Bin:
https://jsbin.com/wazarezufi/edit?js,output
"use strict";
var parts = el.find('input');
function constructor(el) {
console.log('running');
$('input').on('keyup', _.bind(onKeyup, this))
.on('keypress', _.bind(onKeypress, this))
.on('focus', focus)
.on('paste', _.bind(paste, this));
}
function paste(evt) {
// allows pasting of dates in
var str = evt.originalEvent.clipboardData.getData('text/plain'),
bits;
if (str && (bits = /(\d\d)[\/\\.-]?(\d\d)[\/\\.-]?(\d\d\d\d)/.exec(str))) {
parts.each(function (idx) {
$(this).val(bits[idx + 1]);
})
return false;
}
}
function onKeypressDef(e) {
var el = e.target;
var val;
// find the target in our list
for (var idx = 0; idx < parts.length; idx++) {
if (parts[idx] === el) break;
}
if ((val = $(el).val()).length == 2) {
if (idx < parts.length - 1) {
parts[idx + 1].select();
}
}
}
function focus() {
$(this.select());
};
function onKeyup(e) { // needed to trap the backspace
console.log('keyup');
if (e.which === 8) {
onKeypress.call(this, e);
}
}
function onKeypress(e) {
var self = this;
var evt = e;
if ((evt.which > 32) && (/\D/.test(String.fromCharCode(evt.which)))) return false; // only let numeric chars through
_.defer(function () {
onKeypressDef.call(self, evt);
});
}
constructor();
Thanks
You could have a data attribute where you could specify the length of the input, like so:
<input placeholder="YYYY" data-length="4">
Then update you javascript to check for this attribute and if not found, then use 2 as the default.
if ((val = $_el.val()).length == ($_el.data('length') || 2)) {}
The problem is doing this for any input:
if ((val = $(el).val()).length == 2)
You should check (by id, for example) which input triggered the event and compare the length to 2 or 4 depending in the case.
Have updated the fiddle -- https://jsbin.com/vojojufabe/edit?js,output
The issue was that the length was being checked when the data is entered and when lenght is 2 it jumps to next input, have added isyear data attribute, and checked it for lenght to be of 4 characters
if (!isYear && val=== 2) {
if (idx < parts.length - 1) {
parts[idx + 1].select();
}
}
if (isYear && val=== 4) {
if (idx < parts.length - 1) {
parts[idx + 1].select();
}
}
You can achieve this by adjusting your input length check with something as follows:
var l = 2
if (el.id === 'input__date-year-arriveInUk') {
l = 4
}
if ((val = $(el).val()).length == l) {...
You can check whether the id of the current input is the one of your date input and focus the next input after a String of length 4 is entered.
This question already has answers here:
HTML input that takes only numbers and the + symbol
(7 answers)
Closed 5 years ago.
/^+{0,1}(?:\d\s?){11,13}$/ this regex allows + at first place only and numbers only...
on keypress I want user should only be able to type + at first and digits that what above regex validates But code always goes to if part..why regex not working in this scenario
function ValidatePhone(phone) {
var expr = /^\+?(?:\d\s?){11,13}$/;
return expr.test(phone);
}
var countofPlus = 0;
$("#phone").on("keypress", function (evt) {
if (evt.key == "+")
{
countofPlus = countofPlus + 1;
if (countofPlus > 1 || this.value.length >= 1) {
return false;
}
else return true;
}
var charCode = (evt.which) ? evt.which : event.keyCode
if (charCode > 31 && charCode != 43 && charCode != 32 && charCode != 40 && charCode != 41 && (charCode < 48 || charCode > 57))
return false;
return true;
});
$("#phone").on("keyup", function (evt) {
debugger;
if (evt.key == "+") {
countofPlus--;
return true;
}
});
Adapting an answer from HTML input that takes only numbers and the + symbol to your use-case yields the following (IE-)compatible code:
// Apply filter to all inputs with data-filter:
var inputs = document.querySelectorAll('input[data-filter]');
for (var i = 0; i < inputs.length; i++) {
var input = inputs[i];
var state = {
value: input.value,
start: input.selectionStart,
end: input.selectionEnd,
pattern: RegExp('^' + input.dataset.filter + '$')
};
input.addEventListener('input', function(event) {
if (state.pattern.test(input.value)) {
state.value = input.value;
} else {
input.value = state.value;
input.setSelectionRange(state.start, state.end);
}
});
input.addEventListener('keydown', function(event) {
state.start = input.selectionStart;
state.end = input.selectionEnd;
});
}
<input id='tel' type='tel' data-filter='\+?\d{0,13}' placeholder='phone number'>
Above code takes copy & pasting, selecting, backspacing etc. into account where your current implementation fails.
Also, I modified the given regex to \+?\d{0,13} so it allows for incomplete input. Use HTML5 form validation to validate the final result.
I think this regex is being applied only to the char code i.e. a string of length 1. In this case regex will always fail.
Instead, try running the regex test on the input value.
I can add auto slash to the date field.But when I hit backspace, I need the backslash to remain where it is.
var keycode = event.which,
value = $(current).val(),
position1 = 3,
position2 = 6;
if((value.length === (position1 - 1)) ||
(value.length === (position2 - 1))){
if (keycode === 8) {
value = value + '/';
}
}
You can try jsfiddle from this answer
var format = "mm/dd/yyyy";
var match = new RegExp(format
.replace(/(\w+)\W(\w+)\W(\w+)/, "^\\s*($1)\\W*($2)?\\W*($3)?([0-9]*).*")
.replace(/m|d|y/g, "\\d"));
var replace = "$1/$2/$3$4"
.replace(/\//g, format.match(/\W/));
function doFormat(target)
{
target.value = target.value
.replace(/(^|\W)(?=\d\W)/g, "$10") // padding
.replace(match, replace) // fields
.replace(/(\W)+/g, "$1"); // remove repeats
}
$("input[name='birthdate']:first").keyup(function(e) {
if(!e.ctrlKey && !e.metaKey && (e.keyCode == 32 || e.keyCode > 46))
doFormat(e.target)
});
Update
Try this one fiddle that uses HTML5
How to limit numbers for before and after the decimal point, something like 123.123 , so it can have max 3 numbers before . and max 3 numbers after .
<div class="form-group">
<input type="number" class="form-control" name="ta" id="ta" placeholder="ta" ng-model="ta.kol" ng-maxlength="15"/>
<p ng-show="taForm.kol.$error.maxlength" class="help-block">Max 15 symbols !</p>
</div>
You can add a onchange event on the input field and call a function that validates the current input value using regex and communicate same to the user.
Regex : ^[0-9]{0,3}.?[0-9]{0,3}$
JS Code to validate:
function validateNumberInput(inputNumber){
return number.search(/^[0-9]{0,3}.?[0-9]{0,3}$/) == 0 ? true : false;
}
Also you can write a directive in angular that can handle the same.
This can be solved with a simple piece of javascript if you just add an Event Listener to the input and then split the input on the decimal point you can then check the length of both parts and act accordingly.
https://jsfiddle.net/pk07net6/
function checkNumbers()
{
console.log(this.value);
var numbers = this.value.split('.');
var preDecimal = numbers[0];
var postDecimal = numbers[1];
if (preDecimal.length>3 || postDecimal.length>3)
{
alert("Max 3 numbers before and after the decimal point.")
this.select();
}
}
//ADD LISTENER TO INPUT
var input = document.getElementById("numberInput");
console.log(input);
input.addEventListener("change", checkNumbers)
You can use ng-pattern with a regex:
<input ng-pattern="/^[0-9]{1,3}(\.\d{0,3})?/" />
docs: https://docs.angularjs.org/api/ng/directive/ngPattern
For the fraction its pretty easy as you can use Angular number filter. As for the number before the digit you should create a filter like this :
app.filter('beforeDigit', function ($filter) {
return function (input) {
if (input>1000)
return (input % 1000)
elseif(input<1000)
return input;
};
});
So in the end you will end up with something like this :
{{val | filter:{number:3}, filter:beforeDigit }}
After hours of work, I create java-script function which work on keypress event. Number can be 8 characters before decimal separator and 2 character after decimal separator.
https://codepen.io/dumbelovic/pen/bvdXXq
function BeforeAfter(e, obj) {
sepDec = "."
var keycode;
var fieldval = obj.value;
if (window.event) keycode = window.event.keyCode;
else if (e) { keycode = e.which; }
else { return true; }
// denided first charatcter to be zero
if (fieldval == "" && keycode == 48)
return false;
// denided first character to be decimal point
if (fieldval == "" && (keycode == 44 || keycode == 46))
return false;
// enter first decimal point,
// but every next try to eneter decimal point return false
if (fieldval != "" && ((keycode == 44 || keycode == 46))) {
if (fieldval.indexOf(sepDec) < 0) {
var newValue = fieldval + sepDec;
$(obj).val(newValue);
}
return false;
}
var splitfield = fieldval.split(sepDec);
var beforeDecimalPoint;
var afterDecimalPoint;
if (splitfield.length == 1) {
beforeDecimalPoint = splitfield[0];
afterDecimalPoint = "";
}
else if (splitfield.length == 2) {
beforeDecimalPoint = splitfield[0];
afterDecimalPoint = splitfield[1];
}
if (beforeDecimalPoint.length == 8 && keycode != 8 && keycode != 0) {
if (obj.selectionStart >= 0 && obj.selectionStart <= 8)
return false;
}
if (afterDecimalPoint.length == 2 && keycode != 8 && keycode != 0) {
if (obj.selectionStart >= beforeDecimalPoint.length + 1 && obj.selectionStart <= beforeDecimalPoint.length + 1 + 2)
return false;
}
return true;
}
I am trying to restrict an input text to numbers only by checking it in a setInterval and removing the chars that are not numbers. Now so far this works relatively alright, however I am not able to remove "special symbols". For example if I input the Spanish accent symbol ' or symbols like ˇ that should be over a char, it resets the field and the value is not assigned again despite the fact that the symbol gets removed from the string (if I log the string, I can see it is).
Example:
Typing 123a => 'a' removed, input contains 123
Typing 123ˇ => input contains an empty string, despite the fact that the 'text' string
contains 123 and has a length of 3.
Typing 123 and pasting ˇ after it => ˇ removed, input contains 123
This seems like it has something to do with the fact that the special symbols are not ...self-standing (?) and need to be over a char that should be inputted next. Some ideas how to solve it?
Thank you.
I have the following HTML:
<body>
<input type="text" id="input_field">
</body>
And the JS:
$("#input_field").focus(function(e) {
console.log("got focus"+$(this).val());
var obj = this;
intID = setInterval(function() {restrictNumbers(obj)}, 10);
});
$("#input_field").blur(function(e) {
console.log("got blur")
clearInterval(intID);
});
function restrictNumbers(field) {
var text = $(field).val();
var caretPos;
var modified = false;
if(text.length > 0) {
for(var i=0; i<text.length; i++) {
if(isNaN(text.charAt(i))) {
modified = true;
caretPos = field.selectionStart - 1;
text = text.replace(text.charAt(i), "");
i--;
}
}
$(field).val(text);
if(modified) {
modified = false;
field.setSelectionRange(caretPos, caretPos);
}
}
}
JSfiddle example: http://jsfiddle.net/AvMZ5/
You can use this:-
jQuery.fn.ForceNumericOnly =
function()
{
return this.each(function()
{
$(this).keydown(function(e)
{
var key = e.charCode || e.keyCode || 0;
// allow backspace, tab, delete, arrows, numbers and keypad numbers ONLY
// home, end, period, and numpad decimal
return (
key == 8 ||
key == 9 ||
key == 46 ||
key == 110 ||
key == 190 ||
(key >= 35 && key <= 40) ||
(key >= 48 && key <= 57) ||
(key >= 96 && key <= 105));
});
});
};
You can then attach it to your control by doing:
$("#yourTextBoxName").ForceNumericOnly();
Source:- https://gist.github.com/wholypantalones/3083362