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Add removed select options

Currently I have a function I created that removes some options from a select menu based on a value passed from another select. I want to revert back to normal each time the function is called (add all the original options back)
HTML
<select id="Current-Tier" onchange="removetier();" class="form-control boosting-select">
<option value="100">Bronze</option>
<option value="200">Silver</option>
<option value="300">Gold</option>
<option value="400">Platinum</option>
<option value="500">Diamond</option>
</select>
<select id="Desired-Tier" class="form-control boosting-select">
<option value="100">Bronze</option>
<option value="200">Silver</option>
<option value="300">Gold</option>
<option value="400">Platinum</option>
<option value="500">Diamond</option>
</select>
JS
function removetier(){
var currentTierValue = document.getElementById("Current-Tier");
var current = currentTierValue.options[currentTierValue.selectedIndex].value;
var desiredDivisionValue = document.getElementById("Desired-Tier");
for(var i=0;i<desiredDivisionValue.length;i++){
if(desiredDivisionValue[i].value < current){
desiredDivisionValue.remove(desiredDivisionValue[i]);
}
}
Update_Desired_Rank_image();
}

Have you considered adding the hidden attribute rather than deleting them?
Then the next time you receive a request, you can go through the list programmatically and remove the hidden attribute from each option.
An example of the hidden label, BTW, is
<select id="Desired-Tier" class="form-control boosting-select">
<option value="100">Bronze</option>
<option value="200">Silver</option>
<option value="300">Gold</option>
<option value="400">Platinum</option>
<option value="500" hidden>Diamond</option>
</select>
If you run it you will see that Diamond is hidden. This way you always have access to all your options.

You can easily iterate over the select input and either store the removed items in an array or leverage the hidden attribute on the option tag:
Fiddle: https://jsfiddle.net/gLwwmh82/2/
HTML
<select id="mySelect">
<option value="">Select...</option>
<option value="test1">Test1</option>
<option value="test2">Test2</option>
<option value="test3">Test3</option>
<option value="test4">Test4</option>
<option value="test5">Test5</option>
<option value="test6">Test6</option>
</select>
<button id="btnRemove" onclick="remove()">Remove Half of Entries</button>
<button id="btnReset" onclick="reset()">Reset</button>
JS
function reset() {
var select = document.getElementById('mySelect');
var options = select.querySelectorAll('option');
for (var i = 0; i < options.length; i++) {
options[i].removeAttribute('hidden');
}
}
function remove() {
var select = document.getElementById('mySelect');
select.value = "";
var entries = select.querySelectorAll('option');
for (var i = 1; i < 5; i++) {
// Wrap the below line in your logic to know what to delete/not to delete
entries[i].setAttribute('hidden', true);
}
}

jquery get selected values of multiple select boxes

i have this form ..
<form method="post" action=''>
<select class="first">
<option value="0">choose ...</option>
<option value="1">Hello</option>
<option value="3">It's</option>
</select>
<select class="second">
<option value="0">choose ...</option>
<option value="2">World</option>
<option value="4">me</option>
</select>
<input type="text" class="dest" value="" />
</form>
and would like to dynamically gather selected informations with jQuery, because I need to decide on the selected values ...
When you select specific combination of OPTION values (lets say Hello + World) it should add some value to INPUT.dest and lock it (disable from editing) ...
But I can't make it work ... What I have, is that on each change of each select (separately only) i can map the actual value
$(document).ready(function () {
$(".first").change(function () {
var option = $(this).find("option:selected").val();
$(".dest").val(option);
});
$(".second").change(function () {
var option2 = $(this).find("option:selected").val();
$(".dest").val(option2);
});
});
Here is the live demo in fiddle
Do you know what am I missing? I know it will be just a little thing .. thank you

I would generalize it and use one event listener, and then gather the combination and do whatever:
$("select").change(function () {
var first = $(".first").find("option:selected").val();
var second = $(".second").find("option:selected").val();
if(first == 1 && second == 2)
$(".dest").val("Hello world").prop("disabled",true);
else
$(".dest").val("Something else").prop("disabled",false);
});
http://jsfiddle.net/cxx428af/3/

How to link two dynamically populated select boxes?

I have two dynamically populated selectboxes with data coming from same json object within the page. What I want to achieve is to link the two boxes so that whenever there is a change in one select box the same option in other select box gets automatically disabled.
So suppose Xiomi and the corresponding second value Xiomi Redme is selected in first selectboxes then the same option Xiomi Redme should not be available for selection in the other select box
<div>
<select id="brand-select" name="Brand">
<option value=''>Select Brand</option>
<option value='300'>Xiomi</option>
<option value='147'>HTC</option>
</select>
</div>
<div>
<select id='mobile_model_select' name='Mobile_Brand_Models' style='width:208px;'></select>
</div>
<div>
<select id="brand-select_product2" name="Brand">
<option value=''>Select Brand</option>
<option value='300'>Xiomi</option>
<option value='147'>HTC</option>
</select>
</div>
<div>
<select id='mobile_model_select_product2' name='Mobile_Brand_Models_For_Product2' style='width:208px;'></select>
</div>
Here is my jquery code
$(document).ready(function(){
var modelData = {
"300":{
"MI3_16GB":"XIAOMI Mi3 (16GB)",
"REDMI_NOTE":"XIAOMI REDMI NOTE",
"REDMI":"XIAOMI Redmi ",
"REDMI_1S":"XIAOMI REDMI 1S"
},
"147":{
"ONE_M8":"HTC One (M8)",
"DESIRE_610":"HTC Desire 610",
"ONE_E8":"HTC ONE E8"
}
};
$('#brand_select').change(function(){
correspondingId = $(this).find(":selected").val();
var correspondingIdObject = modelData[correspondingId];
$('#mobile_model_select option').remove();
$.each(correspondingIdObject, function(key, value){
$('#mobile_model_select').append($("<option>").text(value).attr('value',key));
});
$('#brand_select_product2').change(function(){ //
correspondingSelectedIdObject = $(this).find(":selected").val();
$('#mobile_model_select_product2 option').remove();
$.each(correspondingSelectedIdObject, function(key, value){
$('#mobile_model_select_product2').append($("<option>").text(value).attr('value',key));
});
});
My problem is how to link the two onchange functions so that whenever the value is changed in one the same option in the other select box is disabled.

for (var i=0; i<selects.length; i++) {
$(selects[i]).find('option').removeAttr('disabled');
for (var j=0; j<vals.length; j++) {
$(selects[i]).find('option[value='+vals[j]+']').attr('disabled', 'disabled');
}
}
have a look at this fiddle .. hope this helps u ...
JSFiddle
credits : #Skwal

enable or disable option from select

I am trying to make an option either selectable OR non-selectable based on whether or not they chose another option. For example, if there is options 1-6 and they have NOT chosen option 1 in their first select box, then in that SAME select box and any other in the form, then option 6 could NOT be chosen.
I looked around, but everything is about clicking a button to achieve this.
This is the code I have (I have also tried onclick)
<script type="text/javascript">
function makeDisable(){
var x=document.getElementById("mySelect2");
x.disabled=true
}
function makeEnable(){
var x=document.getElementById("mySelect2");
x.disabled=false
}</script>
<form>
<select class="mySelect" id="mySelect">
<option onchange="makeEnable()" value="Enable list">Apple</option>
<option onchange="makeDisable()" value="Disable list">Banana</option>
<option id="mySelect2" disabled="true">Orange</option>
</select>
</form>

Option elements don't have event "onchange", but Select elements do.
I've quickly wrote a code snippet below. You may add more select items. When you choose an option in one of those select elements, you shouldn't choose options at same index in other select elements.
function toggleDisability(selectElement) {
//Getting all select elements
var arraySelects = document.getElementsByClassName('mySelect');
//Getting selected index
var selectedOption = selectElement.selectedIndex;
//Disabling options at same index in other select elements
for (var i = 0; i < arraySelects.length; i++) {
if (arraySelects[i] == selectElement)
continue; //Passing the selected Select Element
arraySelects[i].options[selectedOption].disabled = true;
}
}
<form>
<select onchange="toggleDisability(this);" class="mySelect" id="mySelect1">
<option>Apple</option>
<option>Banana</option>
<option>Orange</option>
</select>
<select onchange="toggleDisability(this);" class="mySelect" id="mySelect2">
<option>Hamburger</option>
<option>Pizza</option>
<option>Cola</option>
</select>
</form>

Automatic form fill using javascript

here is my code:
function setActualDate()
{
var d1 = new Date();
var y = d1.getFullYear();
var d = d1.getDate();
var m1 = d1.getMonth() + 1;
var m2 = d1.getMonth();
document.getElementById('entryDate').value = (y+"-"+m1+"-"+d);
document.getElementById('selectedYear').value = y;
document.getElementById('selectedMonth').value = ("0"+m2);
}
</script>
</head>
<body onload="setActualDate()">
<div id="page">
<h3> Welcome to Money Logger!</h3>
<form name="enter" action="enter.php" method="post">
Enter
<select name="mode">
<option selected="selected" value=""></option>
<option value="1">the money withdraw</option>
<option value="2">the money income</option>
</select>
<input id ="entryDate" type="date" name="entryDate">
<input type="text" name="entryName">
<input type="text" name="entryValue">
<input type="submit" value="Enter">
<input type="reset" value="Clear">
</form>
<form name="getEntry" action="getEntry.php" method="post">
Choose month and year for monthly overview:
<select name="month">
<option id = "selectedMonth" selected="selected" value=""></option>
</select>
<select name="year">
<option id = "selectedYear" selected="selected" value=""></option>
</select>
<input type="submit" value="Display">
</form>
</div>
</body>
I used simple javascript to automatically fill the form inputs "entryDate, selectedYear, selectedMonth" by actual date and some other dates used by the further scripts.
My problem is, that when the site is loaded, only first input is automatically filled - the input with id = entryDate.
The next 2 inputs are empty. But, when I press F5 and the site is reloaded again, the 2 inputs are filled correctly.
Could you please help me fix it to have all 3 forms filled when the site is loaded for the first time...
Thank you

You are not using <select> and <option> correctly. <select> represents a dropdown, which can contain multiple <option> elements.
An <option> element represents an option in the dropdown. You close an <option> with </option>. Whatever is BETWEEN the tags will appear in the dropdown:
<option>Hello</option> <!--user sees "Hello" as an option in the dropdown-->
On the other hand, an <option>'s value attribute contains the string that will be sent to the server, if the option is selected, when the form is submitted. You can think of this as the "real" value of the <option>: the user won't see it, but it's the one that matters. Whatever is between <option> and </option> is visible by the user, but doesn't actually DO anything.
Any one of a dropdown's options can be "selected" (that is, visible as the chosen option in the dropdown) by giving it a selected attribute set to selected (selected="selected"). When a user chooses an option, this attribute gets set automatically (and the selected attribute on the other options gets cleared).
So first of all, let's get your selectedYear dropdown looking right. You'll need to manually provide some years as options:
<select id="selectedYear" name="year">
<option value="2013">2013</option>
<option value="2012">2012</option>
<option value="2011">2011</option>
</select>
Note that you need to specify the year both between the tags AND in each <option>'s value attribute, as explained above. Also note that I moved the id to the <select>. There's rarely a reason to select an individual <option> of a <select>; typically to modify a dropdown's options, you should select the <select> tag itself.
So, let's try that. I'll re-create the dropdown above, but I'll add its options using JavaScript:
<select id="selectedYear" name="year"></select>
<script type="text/javascript">
var dropdown = document.getElementById('selectedYear');
var start_year = 2011;
var end_year = 2013;
for (var i = start_year; i <= end_year; i++) {
dropdown.innerHTML += '<option value="' + i + '">' + i + '</option>';
}
</script>
The innerHTML function lets you set the HTML content between an element's opening tag (in this case <select id="selectedYear" name="year"> and closing tag (</select>).
Knowing this, it's pretty easy to select the option you want using JavaScript. Remember you can do this by setting the selected attribute of the <option> to "selected". Here's a portion of your setActualDate function, showing how to set the default year for just the selectedYear dropdown:
<script type="text/javascript>
function setActualDate() {
var d1 = new Date();
var year = d1.getFullYear();
var dropdown = document.getElementById('selectedYear');
//loop through the dropdown's options
for (var i = 0; i < dropdown.options.length; i++) {
var option = dropdown.options[i];
//check if this is the option we want to set
if (option.value == year) {
option.selected = true;
} else {
//ensure all other options are NOT selected
option.selected = false;
}
//NOTE: you can simplify the above if-else to just:
//option.selected = (option.value == year);
}
}
</script>
That should be enough to get you started. I hope it all makes sense.

Use the following HTML for month -
<!-- HTML for month -->
<select id = "selectedMonth" name="month">
<option value="1">Jan</option>
<option value="2">Feb</option>
<option value="3">Mar</option>
<option value="4">Apr</option>
<option value="5">May</option>
<option value="6">Jun</option>
<option value="7">Jul</option>
<option value="8">Aug</option>
<option value="9">Sep</option>
<option value="10">Oct</option>
<option value="11">Nov</option>
<option value="12">Dec</option>
</select>
<!-- HTML for year -->
<select id="selectedYear" name="year">
<option value="2010">2010</option>
<option value="2011">2011</option>
<option value="2012">2012</option>
<option value="2013">2013</option>
</select>
and script
//script for setting month
var monthEl = document.getElementById('selectedMonth');
monthEl.options[m2].selected = "selected"
//for year
var yearEl = document.getElementById('selectedYear');
yearEl.options[y].selected = "selected"

You are getting the elements by their ID so the first time the script runs only fills out the first elements it finds (probably the ones in the first form).
Since you have several elements to fill out automatically, you should be setting classes to on them and use these classes to select the ones you are interested in. For example:
<form id="form1">
<input class="entryDate" type="text"> <!-- note the class=..." -->
</form>
<form id="form2">
<input class="entryDate" type="text">
<select name="mode" class="selectedMonth"> <!-- note the class=..." -->
<option selected="selected" value=""></option>
<option value="1">the money withdraw</option>
<option value="2">the money income</option>
</select>
</form>
Now your code should be something like this:
window.onload = function setActualDate() {
var d1 = new Date();
var y = d1.getFullYear();
var d = d1.getDate();
var m1 = d1.getMonth() + 1;
var m2 = d1.getMonth();
var entryDates = document.getElementsByClassName('entryDate');
var years = document.getElementsByClassName('selectedYear');
var months = document.getElementsByClassName('selectedMonth');
var i, j;
for (i in entryDates)
entryDates[i].value = (y + "-" + m1 + "-" + d);
for (i in months) {
for (j in months[i].options)
if (months[i].options[j].value == m1) {
months[i].options[j].selected = true;
break;
}
}
//similarly for years...
};
Here's a fiddle demonstrating it: http://jsfiddle.net/QDdAp/2/