Develop Reference

How do I get a toggle button to toggle an array back and forth from descending to ascending?

I am using bubbleSort, and I can get the array to toggle from its original order to descending, but I am having trouble getting it to go from descending back to ascending. Should I just copy the bubbleSort code and flip the greater than/less than signs? Any help is appreciated!
var myStuff = [];
function myfunctionA() {
var enteredvalue = document.getElementById("numbers").value;
// alert(typeof Number(document.getElementById('numbers').value));
if (enteredvalue == "") {
alert("Input is not a number");
} else if (isNaN(enteredvalue)) {
alert('You need to enter a valid number!');
}
var elementExists = false;
var x = document.getElementById('numbers').value;
for (var i = 0; i < myStuff.length; i++) {
if (myStuff[i] == Number(x)) {
elementExists = true;
}
}
if(elementExists != true) {
myStuff.push(Number(enteredvalue));
alert('Thank You for entering a valid number.');
} else {
alert('Element is here');
}
}
function myfunctionB() {
window.alert(myStuff.length);
}
function myfunctionC() {
var sum = 0;
for(var i = 0; i < myStuff.length; i++) {
sum+=myStuff[i];
}
alert(sum);
}
function myfunctionD() {
if (myStuff.length == 0) {
alert("already empty");
} else {
myStuff = [];
}
alert("Array Empty");
}
function myfunctionE() {
alert(myStuff.join('\n'));
{
if (myStuff == []) {
alert("Enter something into Array")
}
}
}
function bubbleSort() {
var sorted = true;
var temp;
while(sorted) {
sorted = false;
for(var i = 0; i < myStuff.length-1; i++) {
if(myStuff[i] < myStuff[i+1]) {
temp = myStuff[i];
myStuff[i] = myStuff[i+1];
myStuff[i+1] = temp;
sorted = true;
}
}
}
}

First you'll need a toggle to tell which way you are going.
var isAscending = false;
Then in your bubbleSort function inside the for-statement, above the if-statement.
var sortComparison;
if (isAscending) sortComparison = myStuff[i] > myStuff[i];
if (!isAscending) sortComparison = myStuff[i] < myStuff[i];
Then replace your if-statement with:
if (sortComparison)
Finally, once you have finished sorting, you can toggle your variable:
isAscending = !isAscending;
Though, I'd recommend using a toggled variable and simply using sort() and reverse() instead.
https://jsfiddle.net/ytcax0qc/

if part not executed

$(document).ready(function () {
var t=true;
var f=false;
var cheap;
$('.day1').on('change', function (e) {
if($(this).val() == "Saturday"){
cheap = true;
}
else{
cheap=false;
}
});
if(cheap==true){
$('.pricing1').change(function () {
var price = parseFloat($('.total').data('base-price')) || 0;
$('.pricing1').each(function (i, el) {
price += parseFloat($('option:selected', el).data('cheap'));
$('.total').val('$' + price.toFixed(2));
});
//console.log('cheap',cheap)
});
}
else{
$('.pricing').change(function () {
var price = parseFloat($('.total').data('base-price')) || 0;
$('.pricing').each(function (i, el) {
price += parseFloat($('option:selected', el).data('price'));
$('.total').val('$' + price.toFixed(2));
});
console.log('cheap',cheap)
});
}
});
The console reading returns true for cheap when saturday is selected. but the if part is not executed. Every time only else part is executed. logically it should execute the if part if cheap is true. and the console displays the cheap value to true so the value of cheap is true. This is weird!

You are registering the event handlers at the dom ready, at that point of time cheap has the value false so the if condition will not get satisfied so only the change handler in the else part will get registered.
$(document).ready(function () {
var t = true;
var f = false;
var cheap;
$('.day1').on('change', function (e) {
if ($(this).val() == "Saturday") {
cheap = true;
} else {
cheap = false;
}
});
$('.pricing1').change(function () {
if (cheap == true) {
var price = parseFloat($('.total').data('base-price')) || 0;
$('.pricing1').each(function (i, el) {
price += parseFloat($('option:selected', el).data('cheap'));
$('.total').val('$' + price.toFixed(2));
});
//console.log('cheap',cheap)
} else {
var price = parseFloat($('.total').data('base-price')) || 0;
$('.pricing').each(function (i, el) {
price += parseFloat($('option:selected', el).data('price'));
$('.total').val('$' + price.toFixed(2));
});
console.log('cheap', cheap)
}
});
});
You can simplify the code to something like
$(document).ready(function () {
var t = true;
var f = false;
var cheap;
$('.day1').on('change', function (e) {
if ($(this).val() == "Saturday") {
cheap = true;
} else {
cheap = false;
}
});
$('.pricing1').change(function () {
var data = cheap ? 'cheap' : 'price';
var price = parseFloat($('.total').data('base-price')) || 0;
$('.pricing1').each(function (i, el) {
price += parseFloat($('option:selected', el).data(data)) || 0;
});
$('.total').val('$' + price.toFixed(2));
});
});

Try changing,
if(cheap==true){
to
if(cheap === true){
For explanation, have a look at this answer:
The == operator will compare for equality after doing any necessary type conversions. The === operator will not do the conversion, so if two values are not the same type === will simply return false. It's this case where === will be faster, and may return a different result than ==. In all other cases performance will be the same.

How to submit form only one check box is selected using java script

on edit button click a want to submit form only if one check box checked,don't submit when 0 or more than 2 check box checked
my below code is not working
$("#editbtn_id").click(function () {
var cnt = 0;
var checkbox_value = "";
$(":checkbox").each(function () {
var ischecked = $(this).is(":checked");
});
if (ischecked) {
checkbox_value += $(this).val();
cnt = cnt + 1;
if (cnt == 0 || cnt > 1) {
alert(cnt);
alert("Please select one Test case");
return false;
}
}
return false;
});
HTML
<form action="/editSingletest/{{ testcase.id }}" method="post" onsubmit="return" >
<input type="checkbox"/>
</form>

You can achieve this by following code
$("#editbtn_id").click(function(){
var cnt=0;
var checkbox_checked_count = 0;
var form_submit = false;
$(":checkbox").each(function () {
if($(this).is(":checked")) {
checkbox_checked_count++
}
});
if(checkbox_checked_count == 1) {
form_submit = true;
}
else if(checkbox_checked_count > 1) {
alert("Please select one Test case");
}
alert(form_submit)
$("form").submit();
});
Check working example here in this fiddle

Your counter is in the wrong loop, should be something like this:
$("#editbtn_id").click(function(){
var cnt=0;
var checkbox_value = "";
$(":checkbox").each(function () {
var ischecked = $(this).is(":checked");
if (ischecked){
checkbox_value += $(this).val();
cnt=cnt + 1 ;
}
});
if(cnt==0 || cnt > 1){ ... }
});

try this
$("#editbtn_id").click(function (e) {
if($('form input[type="checkbox"]:checked').length == 1){
$('form').submit();
}
else{
e.preventDefault();
}
});
for 'form' use your form selector

jQuery limit "Dropdown Check List" selects

I'm using jquery with dropdownchecklist item.
this is my code to config selectbox.
jQuery('#selectbox').dropdownchecklist({ width: 120, maxDropHeight: 100, firstItemChecksAll: false, emptyText: 'Select' });
I want to limit the select for only 2 selects.
If the user select 2 options all others item will disable for selecting.
How can I do it?
Update:
I found the easiest way to do this
function Selectbox_limit(jidList) {
var jids = '';
var counter = 0;
for(var i=0; i<jidList.options.length; i++) {
if(jidList.options[i].selected == true)
counter++;
if(counter >= 2) {
jidList.options[i-1].selected = false;
jQuery("#selectbox").dropdownchecklist("destroy");
jQuery("#selectbox option").attr('disabled','disabled');
jQuery("#selectbox option:selected").attr("disabled","");
jQuery('#selectbox').dropdownchecklist({ _propeties_ });
return;
} else if(counter < 2) {
jQuery("#selectbox").dropdownchecklist("destroy");
jQuery("#selectbox option").attr("disabled","");
jQuery('#selectbox').dropdownchecklist({ _propeties_ });
return;
}
}

The dropdownchecklist add the class active to the check boxes so you can use it like this:
$('.active').change(function () {
var num = 0;
$('.active:checked').each(function () {
num++;
});
if(num >= 2)
{
$('.active:checked').attr("disabled", "disabled");
$('.active:checked').each(function () {
$(this).removeAttr();
});
}
else
{
$('.active').removeAttr("disabled", "disabled");
}
});

here is a sample of a jQuery Dropdown Check List with limit
onItemClick: function(checkbox, selector){
var justChecked = checkbox.prop("checked");
var checkCount = (justChecked) ? 1 : -1;
for( i = 0; i < selector.options.length; i++ ){
if ( selector.options[i].selected ) checkCount += 1;
}
if ( checkCount > 3 ) {
alert( "Limit is 3" );
throw "too many";
}
}

You can do it by this
var $b = $('input[type=checkbox]');
if(($b.filter(':checked').length)>2){
$b.attr("disabled", true);
}
or you can use
$(':checkbox:checked").length
$(":checkbox").filter(':checked').length
hope it help.

AutoComplete (AutoFilter?), using jQuery delegate

$('#container form').delegate('#addSearch', 'keyup', function(e) {
var tmpVAL = $('#addSearch').val();
$('.w').each(function() {
var tmpHTML = $(this).html();
if (tmpHTML == tmpVAL) {
$(this).fadeIn(250);
} else if (tmpVAL.length < 1) {
$(this).fadeIn(250);
} else {
$(this).fadeOut(250);
}
});
});
and #addSearch is an <input type="text">.
So, my problem is that; this obviously will only return the results that are an exact match to the tmpVAL - How would I allow it so every letter will change the search result.
e.g.
I type N
it comes up with No, Not, Nothing, Nothingness
I type NOT
it comes up with Not, Nothing, Nothingness
Any help would be appreciated, I would imagine that it would be RegEx?

DEMO https://so.lucafilosofi.com/autocomplete-autofilter-using-jquery-delegate
$(function() {
$('#container form').delegate('#addSearch', 'keyup', function(e) {
var tmpVAL = $('#addSearch').val();
$('.w').each(function() {
var tmpHTML = $(this).text();
var subSection = tmpHTML.substring(tmpVAL.length, 0);
if (subSection == tmpVAL && tmpVAL != '' ) {
$(this).show();
} else {
$(this).hide();
}
});
});
});

You could use a regular expression, but I think that might be overkill. You could just use indexOf:
$('#container form').delegate('#addSearch', 'keyup', function(e) {
var tmpVAL = $('#addSearch').val().toLowerCase();
$('.w').each(function() {
var tmpHTML = $(this).html().toLowerCase();
if (tmpHTML.indexOf(tmpVAL) >= 0) {
$(this).fadeIn(250);
} else if (tmpVAL.length < 1) {
$(this).fadeIn(250);
} else {
$(this).fadeOut(250);
}
});
});
Working example: http://jsfiddle.net/andrewwhitaker/PRyvU/
Here's an alternative solution that doesn't use an .each():
$('#container form').delegate('#addSearch', 'keyup', function(e) {
var tmpVAL = $('#addSearch').val().toLowerCase();
var $words = $(".w");
var contains = function(haystack, needle) {
return haystack.indexOf(needle) >= 0;
};
if (tmpVAL.length < 1) {
$words.fadeIn(250);
}
else {
$words.filter(function() {
return !contains($(this).html().toLowerCase(), tmpVAL);
}).fadeOut(250);
$words.filter(function() {
return contains($(this).html().toLowerCase(), tmpVAL);
}).fadeIn(250);
}
});
http://jsfiddle.net/andrewwhitaker/EyJ6b/