Develop Reference

How to remove element on second click

I need to add elements to container on a first click and delete it on a second one. I guess I'm trying to make it super hard while there is a more elegant and clear solution. Fiddle Link
I was thinking of arrays to create a 1st array for clicked elements and the 2nd one for elements that are already in a container. Then filter the first array through the second one and delete those (unmatched) elements from my container.
var click = +$(this).data('clicks') || 0; // Check if contacts cliked first time
if (click % 2 == 1) { // 2nd click
fruits.splice($.inArray(name, fruits), 1); // Remove Name from an array
$(".test .single").each(function (index, elem) {
compArr.push($(this).text());
});
keyArr = fruits.filter(i => compArr.indexOf(i) !== -1);
var i = 0;
for (; i < keyArr.length; i++) {
$(".name").each(function () {
$(".single:not(:contains('" + keyArr + "'))").remove();
});
} // I guess problem is here
} else { // 1st click
fruits.push(name);
$('.test textarea').css({
'font-size': '12px',
'border': '0'
}).prop('placeholder', '').before('<span class="single">' + name + '></span>');
$('textarea').val('');
}
$(this).data('clicks', click + 1);
For me, this part doesn't work properly. But I would love to hear any of your suggestions even if the entire logic is wrong. Thanks!
var i = 0;
for (; i < keyArr.length; i++) {
$(".name").each(function () {
$(".single:not(:contains('" + keyArr + "'))").remove();
});
}

I've managed to fix it. Added this code:
let deleteSingle = $('.single');
for (let i = 0; i < deleteSingle.length; i++) {
for (let j = 0; j < arrayNewKeys.length; j++) {
if (deleteSingle[i].innerHTML.includes(arrayNewKeys[j])) {
deleteSingle.eq(i).addClass('a');
break;
} else {
deleteSingle.eq(i).removeClass('a');
}
}
}
$('.styleContacts:not(.a)').remove();
if ($('.test > .single.a:only-child')) {
$('.single.a').removeClass('a');
}
Instead of this:
var i = 0;
for (; i < keyArr.length; i++) {
$(".name").each(function () {
$(".single:not(:contains('" + keyArr + "'))").remove();
});
} // I guess problem is here

How do I input a number / time of 01:10 from my code?

I have this working code below to input a number/tme in textbox. This code below is functioning well but I want to set my textbox value into 00:00 and edit my function code like the second jsfiddle however my edited code is not going well as my idea. In my second jsfiddle I want to input a time of 05:30 but the code is replacing any number that input by a user from the textbox 0
function MaskedTextboxDPSDeparture() {
var myMask = "__:__";
var myCorrectionOut2 = document.getElementById("Departure");
var myText = "";
var myNumbers = [];
var myOutPut = ""
var theLastPos = 1;
myText = myCorrectionOut2.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 current position
}
} else {
myOutPut = myOutPut + myMask.charAt(j);
}
}
document.getElementById("Departure").value = myOutPut;
document.getElementById("Departure").setSelectionRange(theLastPos, theLastPos);
}
document.getElementById("Departure").onkeyup = MaskedTextboxDPSDeparture;
HTML
< input id="Departure" type="text" style="width: 35px; text-align: center" value="__:__" />
JSFIDDLE
JSFIDDLE 2
Any suggestion will accepted. Thanks.

Getting an infinite loop and can't see why - Javascript

I'm writing a simple little Connect 4 game and I'm running into an infinite loop on one of my functions:
var reds = 0;
var greens = 0;
function checkEmpty(div) {
var empty = false;
var clicked = $(div).attr('id');
console.log(clicked);
var idnum = parseInt(clicked.substr(6));
while (idnum < 43) {
idnum = idnum + 7;
}
console.log("idnum=" + idnum);
while (empty == false) {
for (var i = idnum; i > 0; i - 7) {
idnumStr = idnum.toString();
var checking = $('#square' + idnumStr);
var str = checking.attr('class');
empty = str.includes('empty');
console.log(empty);
var divToFill = checking;
}
}
return divToFill;
}
function addDisc(div) {
if (reds > greens) {
$(div).addClass('green');
greens++;
console.log("greens=" + greens);
} else {
$(div).addClass('red');
reds++;
console.log("reds=" + reds);
};
$(div).removeClass('empty');
}
$(function() {
var i = 1;
//add a numbered id to every game square
$('.game-square').each(function() {
$(this).attr('id', 'square' + i);
i++;
//add an on click event handler to every game square
//onclick functions
$(this).on('click', function() {
var divToFill = checkEmpty(this);
addDisc(divToFill);
})
})
})
Here is a link to the codepen http://codepen.io/Gobias___/pen/xOwNOd
If you click on one of the circles and watch the browser's console, you'll see that it returns true over 3000 times. I can't figure out what I've done that makes it do that. I want the code to stop as soon as it returns empty = true. empty starts out false because I only want the code to run on divs that do not already have class .green or .red.
Where am I going wrong here?

for (var i = idnum; i > 0; i - 7);
You do not change the i.
Do you want to decrement it by 7?
Change your for loop to the one shown below:
for (var i = idnum; i > 0; i -= 7) {
// ...
}
You also do not use loop variable in the loop body. Instead, you use idnum, I think this can be issue.
while (empty == false) {
for (var i = idnum; i > 0; i -= 7) {
idnumStr = i.toString(); // changed to i
var checking = $('#square' + idnumStr);
var str = checking.attr('class');
empty = str.includes('empty');
console.log(empty);
var divToFill = checking;
// and don't forget to stop, when found empty
if (empty) break;
}
}
I add break if empty found, because if we go to next iteration we will override empty variable with smallest i related value.
You can also wrap empty assignment with if (!empty) {empty = ...;} to prevent this override, but I assume you can just break, because:
I want the code to stop as soon as it returns empty = true
Offtop hint:
while (idnum < 43) {
idnum = idnum + 7;
}
can be easy replaced with: idnum = 42 + (idnum%7 || 7)

Change to this:
for (var i = idnum; i > 0; i = i - 7) {
You are not decrementing the i in your for loop

Building on what the others have posted You would want to change the value of empty inside the for loop. because obviously the string still checks the last string in the loop which would always return false.
while(empty==false){
for (var i = idnum; i > 0; i -= 7) {
// your other codes
if (!empty) {
empty = str.includes('empty');
}
}

Add alphabets dynamically as html row increments

How to ensure i have a dynamic increment of Alphabets in a new cell on left side, next to each cell in a row which is dynamically created based on the option chosen in Select. This newly generated alphabet will be considered as bullet points/serial number for that particular row's text box.
jsfiddle
js code
$(document).ready(function(){
var select = $("#Number_of_position"), table = $("#Positions_names");
for (var i = 1; i <= 100; i++){
select.append('<option value="'+i+'">'+i+'</option>');
}
select.change(function () {
var rows = '';
for (var i = 0; i < $(this).val(); i++) {
rows += "<tr><td><input type='text'></td></tr>";
}
table.html(rows);
});
});
html
<select id="Number_of_position">
</select> <table id="Positions_names">
</table>

This is essentially a base26 question, you can search for an implementation of this in javascript pretty easily - How to create a function that converts a Number to a Bijective Hexavigesimal?
alpha = "abcdefghijklmnopqrstuvwxyz";
function hex(a) {
// First figure out how many digits there are.
a += 1; // This line is funky
var c = 0;
var x = 1;
while (a >= x) {
c++;
a -= x;
x *= 26;
}
// Now you can do normal base conversion.
var s = "";
for (var i = 0; i < c; i++) {
s = alpha.charAt(a % 26) + s;
a = Math.floor(a/26);
}
return s;
}
So you can do
$(document).ready(function(){
var select = $("#Number_of_position"), table = $("#Positions_names");
for (var i = 1; i <= 100; i++){
select.append('<option value="'+i+'">'+i+'</option>');
}
select.change(function () {
var rows = '';
for (var i = 0; i < $(this).val(); i++) {
rows += "<tr><td>" + hex(i) + "</td><td><input type='text'></td></tr>";
}
table.html(rows);
});
});
Heres the example http://jsfiddle.net/v2ksyy7L/6/
And if you want it to be uppercase just do
hex(i).toUpperCase();
Also - this will work up to any number of rows that javascript can handle

if i have understood you correctly, that's maybe what you want:
http://jsfiddle.net/v2ksyy7L/3/
I have added an array for the alphabet:
var alphabet = "abcdefghijklmnopqrstuvwxyz".split("");
and then added the output to your "render" loop:
rows += "<tr><td>" + alphabet[i] + " <input type='text'></td></tr>";

jQuery remove elements by condition

I have some tr elements in table:
<table>
<tr id="tr_level_1">...</tr>
<tr id="tr_level_2">...</tr>
<tr id="tr_level_3">...</tr>
<tr id="tr_level_4">...</tr>
<tr id="tr_level_5">...</tr>
</table>
In Javascript I have the next variable:
var levels = 3;
I want to delete all tr's where number in id is more than levels. And if levels is more than number of tr's - adding tr's after last.
Thanls a lot.

Working demo
Try this:
var levels = 3;
$("table tr:gt("+(levels-1)+")").remove();
I substract one because this expression ("gt": greater than) is 0-based index.
For the second part of your question try this:
http://www.jsfiddle.net/dactivo/fADHL/
if($("table tr").length<levels){
//the code here for less than levels
}
else
{
$("table tr:gt("+(levels-1)+")").remove();
}

I think this should complete the answer
var levels = 3;
var $trs = $("table tr");
var currentLevels = $trs.length;
if (currentLevels > levels) {
$trs.filter(":gt(" + (levels - 1) + ")").remove();
} else if (currentLevels < levels) {
var t = "";
for (i = (currentLevels + 1); i <= levels; i++) {
t += '<tr id="tr_level_' + i + '"><td>' + i + '</td></tr>';
}
$trs.parent().after(t);
}
http://jsfiddle.net/c6XWN/1/ <-- levels = 10
http://jsfiddle.net/c6XWN/2/ <-- levels = 5
http://jsfiddle.net/c6XWN/3/ <-- levels = 3
Good luck!

try this
var total = $("#table").find('tr').length;
var levels = 3;
if(levels<=total) {
for(levels=levels;levels<=total;levels++) {
$("#tr_level_"+levels).remove();
}
}
else {
$("#table").append("<tr id=\"tr_level_"+total+1+"\">..</tr>");
// this will add the element with tr_level_6 at the end
}

Maybe this:
function editTr(inVal) {
selector = new RegExp("\d")
var lastID = selector.exec($("table tr").last().attr("id"));
if (lastID > inVal) {
$("table tr").each(function () {
if (selector.exec($(this).attr("id")) > inVal) {
$(this).remove();
}
});
}
else if (lastID < inVal) {
for (x=lastID;x<=inVal;x++) {
$("table").append("<tr id=\"tr_level_"+x+"\"></tr>")
}
}
else {
return null
}
}

var levels = 5;
var lastTr = $('#ranks_percentages tr:last').attr('id');
lastTr = lastTr.split('_');
var lastLevel = lastTr[1];
if (levels < lastLevel) {
//removing
} else {
//adding
}