We Keep Coding

Unable to run the following js code in IE11 or IE9

I've made a simple html page with some js code, i've used all vanilla JS and checked to be using all compatibile functions with IE.
The issue is that the following page runs in Google Chrome as it have to, while in IE it's not working, i've tryed in IE11 and IE9 and it's not working in both.
The code is just adding click event to three buttons, button + / - which change the quantity inside the input and the confirm button.
The js looks like this:
<script>
const btns = document.querySelectorAll('.btn-qty');
const confirms = document.querySelectorAll('.btn-success');
const inputs = document.querySelectorAll('.qty')
confirms.forEach(function(confirm) {
confirm.addEventListener('click', confirmHandler);
});
function confirmHandler(event) {
event.preventDefault();
let product_id = this.getAttribute("data-product-id");
let option_id = this.getAttribute("data-option-id");
let iva = parseInt(this.getAttribute("data-iva"));
let price = this.getAttribute("data-price");
let qty = this.getAttribute("data-qty");
window.location.href = "_?productId=" + product_id + "&optionId=" + option_id + "&iva=" + iva + "&price=" + price + "&qty=" + qty
}
inputs.forEach(function(input) {
input.addEventListener('change', function(event) {
event.preventDefault();
let btn = input.parentNode.querySelector(".input-group-prepend").querySelector('.btn-qty');
let confirm = input.parentNode.parentNode.querySelector('.btn-success')
let curVal = parseInt(input.value)
confirm.setAttribute('data-qty', curVal)
if (curVal >= 1) {
btn.removeAttribute('disabled');
}else if(curVal <= 1){
btn.setAttribute('disabled', true);
}
});
});
btns.forEach(function(btn) {
btn.addEventListener('click', function(event) {
event.preventDefault();
let input = btn.parentNode.parentNode.querySelector('.qty')
let curVal = parseInt(input.value)
let type = btn.getAttribute("data-type");
if (type == 'minus') {
if (curVal > 1) {
input.value = curVal - 1
input.dispatchEvent(new Event('change'));
}
if (parseInt(input.value) == 1) {
btn.setAttribute('disabled', true)
}
}else if (type == 'plus'){
input.value = curVal + 1
input.dispatchEvent(new Event('change'));
}
});
});
</script>
Here is the same code run on Chrome (top) and IE11 (bottom)
Here is a JSfiddle of the code

I agree with Ivar's suggestion. We need to add polyfill for forEach in IE, then it can work with NodeList and HTMLCollection in IE. Please add the following polyfill:
var ctors = [typeof NodeList !== "undefined" && NodeList, typeof HTMLCollection !== "undefined" && HTMLCollection];
for (var n = 0; n < ctors.length; ++n) {
var ctor = ctors[n];
if (ctor && ctor.prototype && !ctor.prototype.forEach) {
ctor.prototype.forEach = Array.prototype.forEach;
if (typeof Symbol !== "undefined" && Symbol.iterator && !ctor.prototype[Symbol.iterator]) {
Object.defineProperty(ctor.prototype, Symbol.iterator, {
value: Array.prototype[Symbol.itereator],
writable: true,
configurable: true
});
}
}
}
Besides, there's another error in this line in IE:
input.dispatchEvent(new Event('change'));
You need to use the following codes to use dispatchEvent in IE:
var event = document.createEvent("Event");
event.initEvent("change", false, true);
input.dispatchEvent(event);

java script load issue with ng build --prod

my javascript file for multiple email(multiple_emails.js plugin) is working fine with ng serve my code :
(function( $ ){
$.fn.multiple_emails = function(options) {
// Default options
var defaults = {
checkDupEmail: true,
theme: "Bootstrap",
position: "top",
invalid:"Invalid Email Id"
};
// Merge send options with defaults
var settings = $.extend( {}, defaults, options );
var deleteIconHTML = "";
if (settings.theme.toLowerCase() == "Bootstrap".toLowerCase())
{
deleteIconHTML = '<span class="glyphicon glyphicon-remove"></span>';
}
else if (settings.theme.toLowerCase() == "SemanticUI".toLowerCase() || settings.theme.toLowerCase() == "Semantic-UI".toLowerCase() || settings.theme.toLowerCase() == "Semantic UI".toLowerCase()) {
deleteIconHTML = '<i class="remove icon"></i>';
}
else if (settings.theme.toLowerCase() == "Basic".toLowerCase()) {
//Default which you should use if you don't use Bootstrap, SemanticUI, or other CSS frameworks
deleteIconHTML = '<i class="basicdeleteicon">Remove</i>';
}
return this.each(function() {
var to_id = this.id;
var orig_id=to_id;
console.log(to_id);
var arr = to_id.split('_');
to_id = arr[1];
console.log("to_id",to_id);
setTimeout(function(){
console.log($('.licls'+to_id).length);
if($('.licls'+to_id).length > 4){
$('#input_'+to_id).css('display','none');
}else {
$('#input_'+to_id).css('display','block');
}
},200);
//$orig refers to the input HTML node
var $orig = $(this);
var $list = $('<ul class="multiple_emails-ul" id=ul_'+to_id+' />'); // create html elements - list of email addresses as unordered list
console.log($(this).val());
if ($(this).val() != '' && IsJsonString($(this).val())) {
$.each(jQuery.parseJSON($(this).val()), function( index, val ) {
$list.append($('<li class="multiple_emails-email licls'+to_id+'"><span class="email_name" data-email="' + val.toLowerCase() + '">' + val + '</span></li>')
.prepend($(deleteIconHTML)
.click(function(e) { $(this).parent().remove(); refresh_emails(); e.preventDefault(); })
)
);
});
}
var $input = $('<input type="text" class="multiple_emails-input text-left" id= input_'+to_id+' />').on('keyup', function(e) { // input
console.log($(this).attr('id'));
$(this).removeClass('multiple_emails-error');
$('#'+orig_id).parent().find("label").remove();
var input_length = $(this).val().length;
var keynum;
if(window.event){ // IE
keynum = e.keyCode;
}
else if(e.which){ // Netscape/Firefox/Opera
keynum = e.which;
}
//if(event.which == 8 && input_length == 0) { $list.find('li').last().remove(); } //Removes last item on backspace with no input
// Supported key press is tab, enter, space or comma, there is no support for semi-colon since the keyCode differs in various browsers
if(keynum == 9 || keynum == 32 || keynum == 188) {
display_email($(this), settings.checkDupEmail);
}
else if (keynum == 13) {
if($('.licls'+to_id).length > 4){
$('#input_'+to_id).css('display','none');
}else {
$('#input_'+to_id).css('display','block');
}
display_email($(this), settings.checkDupEmail);
//Prevents enter key default
//This is to prevent the form from submitting with the submit button
//when you press enter in the email textbox
e.preventDefault();
}
}).on('blur', function(event){
if($('.licls'+to_id).length > 4){
$('#input_'+to_id).css('display','none');
}else {
$('#input_'+to_id).css('display','block');
}
$('#'+orig_id).parent().find("label").remove();
if ($(this).val() != '') { display_email($(this), settings.checkDupEmail); }
});
var $container = $('<div class="multiple_emails-container contnr_'+to_id+'" />').click(function() { $input.focus(); } ); // container div
// insert elements into DOM
if (settings.position.toLowerCase() === "top")
$container.append($list).append($input).insertAfter($(this));
else
$container.append($input).append($list).insertBefore($(this));
/*
t is the text input device.
Value of the input could be a long line of copy-pasted emails, not just a single email.
As such, the string is tokenized, with each token validated individually.
If the dupEmailCheck variable is set to true, scans for duplicate emails, and invalidates input if found.
Otherwise allows emails to have duplicated values if false.
*/
function display_email(t, dupEmailCheck) {
console.log(t.attr('id'));
//Remove space, comma and semi-colon from beginning and end of string
//Does not remove inside the string as the email will need to be tokenized using space, comma and semi-colon
var arr = t.val().trim().replace(/^,|,$/g , '').replace(/^;|;$/g , '');
//Remove the double quote
arr = arr.replace(/"/g,"");
//Split the string into an array, with the space, comma, and semi-colon as the separator
arr = arr.split(/[\s,;]+/);
var errorEmails = new Array(); //New array to contain the errors
var pattern = new RegExp(/^((([a-z]|\d|[!#\$%&'\*\+\-\/=\?\^_`{\|}~]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])+(\.([a-z]|\d|[!#\$%&'\*\+\-\/=\?\^_`{\|}~]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])+)*)|((\x22)((((\x20|\x09)*(\x0d\x0a))?(\x20|\x09)+)?(([\x01-\x08\x0b\x0c\x0e-\x1f\x7f]|\x21|[\x23-\x5b]|[\x5d-\x7e]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(\\([\x01-\x09\x0b\x0c\x0d-\x7f]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF]))))*(((\x20|\x09)*(\x0d\x0a))?(\x20|\x09)+)?(\x22)))#((([a-z]|\d|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(([a-z]|\d|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])*([a-z]|\d|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])))\.)+(([a-z]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(([a-z]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])*([a-z]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])))\.?$/i);
for (var i = 0; i < arr.length; i++) {
var res_arr=JSON.parse($orig.val().toLowerCase().split(','))
//Check if the email is already added, only if dupEmailCheck is set to true
if ( dupEmailCheck === true && res_arr.indexOf(arr[i].toLowerCase()) != -1) {
if (arr[i] && arr[i].length > 0) {
new function () {
var existingElement = $list.find('.email_name[data-email=' + arr[i].toLowerCase().replace('.', '\\.').replace('#', '\\#') + ']');
existingElement.css('font-weight', 'bold');
setTimeout(function() { existingElement.css('font-weight', ''); }, 1500);
}(); // Use a IIFE function to create a new scope so existingElement won't be overriden
}
}
else if ( pattern.test(arr[i]) == true && res_arr.indexOf(arr[i].toLowerCase()) == -1) {
if($('#ulcls'+t.attr('id')).length < 4) {
$list.append($('<li class="multiple_emails-email licls'+to_id+'"><span class="email_name" data-email="' + arr[i].toLowerCase() + '">' + arr[i] + '</span></li>')
.prepend($(deleteIconHTML)
.click(function(e) { $(this).parent().remove(); refresh_emails(); e.preventDefault(); })
)
);
}
}
else
errorEmails.push(arr[i]);
}
// If erroneous emails found, or if duplicate email found
if(errorEmails.length > 0) {
t.val(errorEmails.join("; ")).addClass('multiple_emails-error');
t.after('<label for='+orig_id+' style="color:#cc5965;">'+settings.invalid+'</label>');
}else {
$('#'+orig_id).parent().find("label").remove();
t.val("");
}
refresh_emails ();
}
function refresh_emails () {
var emails = new Array();
var container = $orig.siblings('.multiple_emails-container');
container.find('.multiple_emails-email span.email_name').each(function() { emails.push($(this).html()); });
$orig.val(JSON.stringify(emails)).trigger('change');
if($('.licls'+to_id).length > 4){
$('#input_'+to_id).css('display','none');
}else {
$('#input_'+to_id).css('display','block');
}
}
function IsJsonString(str) {
try { JSON.parse(str); }
catch (e) { return false; }
return true;
}
$(document).ready(function(){
$('#input_'+to_id).on("cut copy paste",function(e) {
e.preventDefault();
});
});
return $(this).hide();
});
};
})(jQuery);
But when i compile it with ng build --prod it's gives TypeError: $(...).multiple_emails is not a function , if it's not working correctly any other tool to convert from JavaScript to typescript ?
i had convert js into typesript using online compiler but nothing happened.

solved!!!!
finally i figure out the problem. it is in angular-cli.json.when i place my multiple_email.js after jquery-3.1.1.min.js,jquery.validate.min.js then it works like charm...!!! #rajesh thanks

Control+backspace in textbox javascript

I have a requirement of having a text-box with default value say "PF_". If I type something and press control+backspace All the values are been deleted. This problem occurs only If I have an underscore "_" at the end.
Javascript
var readOnlyLength = $('#field').val().length;
$('#output').text(readOnlyLength);
$('#field').on('keypress, keydown', function (event) {
var $field = $(this);
$('#output').text(event.which + '-' + this.selectionStart);
if ((event.which != 37 && (event.which != 39)) && ((this.selectionStart < readOnlyLength) || ((this.selectionStart == readOnlyLength) && (event.which == 8)))) {
return false;
}
});
Html
<input id="field" type="text" value="PF_" size="50" />
I have tried a sample fiddle.
Any Idea?

I'm not sure if this is what you're after, but this will reset the field to the previous value if the user tries to modify the read-only part:
$('#field').on('keypress, keydown', function (event) {
var $field = $(this);
var old = $field.val();
setTimeout(function(){
if($field.val().slice(0,3)!='PF_') {
$field.val(old);
}
},0);
});
Edit: in response to op's comments, try this code instead:
$('#field').on('keypress, keydown', function (event) {
var $field = $(this);
if(event.ctrlKey && event.which==8) { // ctrl-backspace
$field.val('PF_');
return false;
}
var old = $field.val();
setTimeout(function(){
if($field.val().slice(0,3)!='PF_') {
$field.val(old);
}
},0);
});
Fiddle

This is how I would do it:
$("#field").keyup(function(e){
if($(this).val().length < 3){
$(this).val("PF_");
}
});
Here is the JSFiddle demo

Change character when keydown is held

I am trying to make a simple way to change a character in an input field when the key is held down for more than 1second. For example holding down a would then change the character to á.
The exact thing I am looking to do can be seen on fluencia.com.
Also there is a need to be able to change the character if it is held for a further second.
So far, all I have done is detect the key held with the following code:
count = 0;
$(document).bind('keypress', function(e){
keyisdown = false;
key = e.which
if (e.which === key) {
keyisdown = true;
count ++;
if(count>1){
}
}
}).bind('keyup',function(){
keyisdown = false;
count = 0;
console.log('key up');
});
Thanks
Adam

This should do it for key "a".. You'll need to look up your keycode
var fired = false;
$(document).on("keydown", function(e) {
if (e.keyCode == 65) {
var timer = setTimeout(function() {
if (!fired) console.log('its held');
fired = true;
}, 1000);
$(document).on("keyup", function() {
clearTimeout(timer);
});
}
});
fiddle - http://jsfiddle.net/0a9rftt2/

With help from Graham T above and a bit of playing around I come up with the following:
var fired = false;
var keycode = null;
var key = null;
$("#loginEmail").on("keypress", function(e) {
keycode = e.which;
key = String.fromCharCode(keycode);
});
$("#loginEmail").on("keydown", function(e) {
var s = this.value;
var str = this.value;
if (e.keyCode == 65) {
var timer = setTimeout(function() {
if (!fired) console.log('its held');
fired = true;
if(fired){
s = $("#loginEmail").val();
str = s.substring(0, s.length - 1);
replacewith = 'á';
str = str+replacewith;
$("#loginEmail").val(str);
}
}, 500);
$(document).on("keyup", function() {
clearTimeout(timer);
fired = false;
});
}
});
It is not cleaned up as yet. I had to use keypress to get the true character (capitalised or not) and then used keydown to detect key being held down.

Switch between two textareas only when pressing Tab button

Normally when a user is visiting a web page and pressing TAB button on a keyboard, the selection moves from one element to another starting from the begining of the page.
I am looking for a solution to switch between two particular text areas by pressing TAB button on a keyboard with an initial focus on the first one when web page is loaded? All other elements on the page have to be ignored for this TAB key press event.
How can I achive this?
Thanx for your help!
= Update =
I have managed to make it work under Firefox 12.0 . IE and Chrome do not work properly. Asuming the text area IDs are #ICCID and #MSISDN, the Jquery looks like this:
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.7.2/jquery.min.js"></script>
<script type="text/javascript">
$(function() {
$(document).ready(function() {
$("#ICCID").focus();
});
var $inp = $('.cls');
$inp.bind('keydown', function(e) {
var key = e.which;
if (key == 9) {
e.preventDefault();
var nxtIdx = $inp.index(this) + 1;
$(".cls:eq(" + nxtIdx + ")").focus();
//Simulate Enter after TAB
var textInput = $("#MSISDN").val();
var lines = textInput .split(/\r|\r\n|\n/);
if (lines > 1) {
$("#MSISDN").on("keypress", function(e) {
if (e.keyCode == 9) {
var input = $(this);
var inputVal = input.val();
setTimeout(function() {
input.val(inputVal.substring(0,inputVal.length) + "\n");
}, 1);
}
});
}
}
if (key == 9) {
e.preventDefault();
var nxtIdx = $inp.index(this) - 1;
$(".cls:eq(" + nxtIdx + ")").focus();
//Simulate Enter after TAB
$("#ICCID").on("keypress", function(e) {
if (e.keyCode == 9) {
var input = $(this);
var inputVal = input.val();
setTimeout(function() {
input.val(inputVal.substring(0,inputVal.length) + "\n");
}, 1);
}
});
}
});
});
</script>

Catch the keydown action using jQuery, determine which textarea has focus, and then use the focus() method to set the focus to the other textarea.
Supposing that your textareas have id="textarea1" and id="textarea2". First you can set focus to the first textarea when the page loads by doing : $('#textarea1').focus();
$("body").keypress(function(e) {
var code = (e.keyCode ? e.keyCode : e.which);
switch(code)
{
case 9:
if($("#textarea1").focus()){
//First one has focus, change to second one
$("#textarea2").focus();
}
else if($("#textarea2").focus()) {
//Second one has focus, change to first one
$("#textarea1").focus();
}
}
});

Ok I have found the solution for for my task! It also includes the simulation of ENTER key just after the TAB key event, so user do not need to hit ENTER to go to the new line. Tested with IE9, FF12, Chrome 18.0.x
Here it is:
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.7.2/jquery.min.js"></script>
<!-- Switching between ICCIDs and MSISDNs textareas + simulating ENTER key pressing after the TAB key event - START -->
<script type="text/javascript">
$(function() {
$(document).ready(function() {
$("#ICCID").focus();
});
var $inp = $('.cls');
$inp.bind('keydown', function(e) {
var key = e.which;
if (key == 9) {
e.preventDefault();
var nxtIdx = $inp.index(this) + 1;
$(".cls:eq(" + nxtIdx + ")").focus();
//Simulate Enter after TAB
var textInput = $("#MSISDN").val();
var lines = textInput .split(/\r|\r\n|\n/);
if (lines > 1) {
$("#MSISDN").on("keyup", function(e) {
if (e.keyCode == 9 || e.which == 9) {
var input = $(this);
var inputVal = input.val();
setTimeout(function() {
input.val(inputVal.substring(0,inputVal.length) + "\r\n");
}, 1);
}
});
}
}
if (key == 9) {
e.preventDefault();
var nxtIdx = $inp.index(this) - 1;
$(".cls:eq(" + nxtIdx + ")").focus();
//Simulate Enter after TAB
$("#ICCID").on("keyup", function(e) {
if (e.keyCode == 9 || e.which == 9) {
var input = $(this);
var inputVal = input.val();
setTimeout(function() {
input.val(inputVal.substring(0,inputVal.length) + "\r\n");
}, 1);
}
});
}
});
});
</script>
<!-- Switching between ICCIDs and MSISDNs textareas + simulating ENTER key pressing after the TAB key event - END -->

What about this.... Im to bored at work i think..
http://jsbin.com/uqalej/3/
HTML:
<input/>
<textarea id="t1"></textarea>
<textarea id="t2"></textarea>
<input/>
<button onClick='window.toggleBetween=true;'>Init</button>
<button onClick='window.toggleBetween=false;'>Destroy</button>
JS:
var d = document,
t1 = d.getElementById("t1"),
t2 = d.getElementById("t2"),
nodeType, nodeTypes = [],
i, iLen,
y, yLen;
nodeTypes.push( d.getElementsByTagName("textarea") );
nodeTypes.push( d.getElementsByTagName("input") );
nodeTypes.push( d.getElementsByTagName("select") );
i = 0;
iLen = nodeTypes.length;
for ( ; i < iLen; i++ ) {
nodeType = nodeTypes[i];
y = 0;
yLen = nodeType.length;
for ( ; y < yLen; y++ ) {
if ( nodeType[y] != t1 && nodeType[y] != t2 ) {
nodeType[y].onfocus = function() {
if ( window.toggleBetween )
t1.focus();
};
}
}
}

Using javascript on page load:
document.getElementById("textarea1").focus();
document.getElementById('textarea1').tabIndex="1";
document.getElementById('textarea2').tabIndex="2";