i have a problem. I wanted to do on my web page this thing:
1. i have select box like this
<select name="firstbox" id="#firstbox">
<option value="1">Option 1</option>
<option value="2">Option 2</option>
<option value="3">Option 3</option>
</select>
2. i have select box of which options are depending on first box, so if i choose in first box Option 1 i will have lets say this:
<select name="secondbox" id="#secondbox">
<option value="4">Option 4</option>
<option value="5">Option 5</option>
</select>
and if i choose Option 2 i would have lets say
<select name="secondbox" id="#secondbox">
<option value="8">Option 8</option>
<option value="9">Option 9</option>
</select>
And in adition based on those two selection box i need one link that changes url depending on those two. So it would be IF option from #firstbox = 1, and secondbox=2 #link is first.html
<a href="first.html" id="link" >Show </a>
I dont know if its doable in javascript, or is it better and more smooth to make it with PHP and small database... But i still dont know in that case how to change link of that button... Hope someone has an idea.
Alternatively, if you opt to use jQuery, of course you can use the onchange event. But first, you need to set a simple default values, wherein, it depends on what you select. Consider this example:
<select name="firstbox" id="firstbox" style="width: 100px;">
<option disabled selected>Select Value</option>
<option value="1">Option 1</option>
<option value="2">Option 2</option>
<option value="3">Option 3</option>
</select>
<div id="select_boxes"></div>
<div id="link"></div>
<script src="//ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
<script type="text/javascript">
var default_values = {
"1": {"label": "first","values": [4,5]},
"2": {"label": "second","values": [8,9]},
"3": {"label": "third","values": [6,7]}
};
$(document).ready(function(){
$('#firstbox').on('change', function(){
var current = $(this).val();
$('#select_boxes').html('<select name="secondbox" id="secondbox" style="width: 100px;"></select>');
var options = '';
$.each(default_values[current].values, function(index, values){
options += '<option value="'+values+'">Option '+values+'</option>'; // fetch options
});
$('#secondbox').html(options); // add options
$('#link').html('show');
});
});
</script>
Sample Output
Related
I am trying to make a button change when a certain option from a drop-down is selected.
document.getElementById("region").onchange = function() {
document.getElementById("order-btn").product-code = this.value;
}
<select name="option" id="option" required>
<option value="1234d1">Option 1</option>
<option value="amdk19">Option 2</option>
<option value="akd1sk">Option 3</option>
<option value="19sd91">Option 4</option>
<option value="asjd91">Option 5</option>
<option value="129e8j">Option 6</option>
</select>
<div class="btn-checkout">
<button id="order-btn" type="submit" product-code="">Checkout</button>
</div>
What I need to happen is when an option is chosen from the drop-down, the product code associated with that option is put into the product-code="HERE" on the button.
For example, If I chose Option 2 on the drop-down, its product code "amdk19" would then be put into the button like this:
<button id="order-btn" type="sumbit" product-code="amdk19">
I think this can be done with JavaScript, but I could not figure out how.
Thanks
Something like this should work! You can't set attributes on the object directly, like you tried -- instead, you have to use setAttribute on the button. You can use .value on the dropdown to get the value of the selected option.
document.getElementById("option").onchange = function() {
const btn = document.getElementById("order-btn");
// `this` refers to the dropdown, so you're getting the dropdown's selected value
btn.setAttribute("product-code", this.value);
}
document.getElementById("order-btn").onclick = function() {
// `this` refers to the button
console.log(this.getAttribute("product-code"));
}
<select name="option" id="option" required>
<option selected disabled>Select An Option</option>
<option value="1234d1">Option 1</option>
<option value="amdk19">Option 2</option>
<option value="akd1sk">Option 3</option>
<option value="19sd91">Option 4</option>
<option value="asjd91">Option 5</option>
<option value="129e8j">Option 6</option>
</select>
<div class="btn-checkout">
<button id="order-btn" type="submit" product-code="">Checkout</button>
</div>
As there are already answer to this. I would like to recommend you Jquery for easy dealing with javascript.
Include jquery cdn like this : Adding jquery CDN in HTML
Add id to your select and button. Adding Id in HTML
Then use jquery methods like this:
$("#optionsOfSomething").on("change",function(e){
$("#order-btn").attr("product-code",$(this).val());
});
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.0/jquery.min.js"></script>
<select name="option" id="optionsOfSomething" required>
<option value="1234d1">Option 1</option>
<option value="amdk19">Option 2</option>
<option value="akd1sk">Option 3</option>
<option value="19sd91">Option 4</option>
<option value="asjd91">Option 5</option>
<option value="129e8j">Option 6</option>
</select>
<div class="btn-checkout">
<button id="order-btn" type="submit" product-code="">Checkout</button>
</div>
when I open the combobox via contextMenu, always the same item is selected.
How can I determine that one of the other items is selected?
For instance, there are 3 items "car1", "car2", "car3" and when I open the combobox "car1" appears in the list first. So how would I get e.g. "car2" appears in the list first?
Thanks very much!
if you mean a select element, you can change the order of items
<select id="list">
<option value="2">Car 2</option>
<option value="1">Car 1</option>
<option value="3">Car 3</option>
</select>
you could also set the default item with the selected attribute:
<select id="list">
<option value="1">Car 1</option>
<option value="2" selected>Car 2</option>
<option value="3">Car 3</option>
</select>
in JS you simply have to set the value of your select
const myForm = document.forms['my-form']
// set the select on the second cat
myForm.miaou.value = 'c2'
<form action="xxx" name="my-form">
<!-- other form elements -->
<select name="miaou">
<option value="c1">Cat 1</option>
<option value="c2">Cat 2</option>
<option value="c3">Cat 3</option>
</select>
</form>
I have same classname multi select box with same values in body, what I want if use chose value 1 from first or any select box then that value 1 on all other select box option will disable so user can't choose the same value in other multi select box.
<select name="mySel" class="myselect" multiple="multiple">
<option value="val1">option 1</option>
<option value="val2">option 2</option>
<option value="val3">option 3</option>
<option value="val4">option 4</option>
</select>
<select name="mySel" class="myselect" multiple="multiple">
<option value="val1">option 1</option>
<option value="val2">option 2</option>
<option value="val3">option 3</option>
<option value="val4">option 4</option>
</select>
This need to achieve via javascript or jQuery,
So you're likely going to get downvotes. You haven't actually shown that you've tried anything, you have only given us the HTML and asked that we solve your problem.
That said, I like to sink my teeth into easy problems, as this is. What you're wanting to do is, in each select, listen for the change event. When that triggers, get the value of the selected option, and disable any option with that value in any other selects. Take a look at the following:
$(function() {
/********
* Function to disable the currently selected options
* on all sibling select elements.
********/
$(".myselect").on("change", function() {
// Get the list of all selected options in this select element.
var currentSelectEl = $(this);
var selectedOptions = currentSelectEl.find("option:checked");
// otherOptions is used to find non-selected, non-disabled options
// in the current select. This will allow for unselecting. Added
// this to support extended multiple selects.
var otherOptions = currentSelectEl.find("option").not(":checked").not(":disabled");
// Iterate over the otherOptions collection, and using
// each value, re-enable the unselected options that
// match in all other selects.
otherOptions.each(function() {
var myVal = $(this).val();
currentSelectEl.siblings(".myselect")
.children("option[value='" + myVal + "']")
.attr("disabled", false);
})
// iterate through and disable selected options.
selectedOptions.each(function() {
var valToDisable = $(this).val();
currentSelectEl.siblings('.myselect')
.children("option[value='" + valToDisable + "']")
.attr("disabled", true);
})
})
})
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
<select name="mySel" class="myselect" multiple="multiple">
<option value="val1">option 1</option>
<option value="val2">option 2</option>
<option value="val3">option 3</option>
<option value="val4">option 4</option>
</select>
<select name="mySel2" class="myselect" multiple="multiple">
<option value="val1">option 1</option>
<option value="val2">option 2</option>
<option value="val3">option 3</option>
<option value="val4">option 4</option>
</select>
<select name="mySel3" class="myselect" multiple="multiple">
<option value="val1">option 1</option>
<option value="val2">option 2</option>
<option value="val3">option 3</option>
<option value="val4">option 4</option>
</select>
<select name="mySel4" class="myselect" multiple="multiple">
<option value="val1">option 1</option>
<option value="val2">option 2</option>
<option value="val3">option 3</option>
<option value="val4">option 4</option>
</select>
Edited the above code to support multiple selects. Actually, it wasn't so much an issue of multiple selects, as I was doing a very lazy handling of unselecting options. Now, when the user is selecting or de-selecting options in any select, only the non-disabled options in that select are used: the (":checked") to disable that option in all other selects, and the .not(":checked") to re-enable any options that the user has somehow unselected.
Try this code , it should do the job:
using Not selector and for each to iterate on other select options:
$(document).ready(function() {
$('.myselect:first').change(function() { // once you change the first select box
var s = $('.myselect:first option:selected').val(); // get changed or clicked value
others = $(':not(.myselect:first) >option'); //select other controls with option value
others.each(function() {
if (this.value == s) // for example if you click on 1 the other controls will get 1 disabled
$(this).attr('disabled', 'disabled').siblings().removeAttr('disabled');
// remove disabled from others if you click something else
});
});
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<select class="myselect" multiple="multiple" name="mySel">
<option value="val1">option 1</option>
<option value="val2">option 2</option>
<option value="val3">option 3</option>
<option value="val4">option 4</option>
</select>
<select class="myselect" multiple="multiple" name="mySel">
<option value="val1">option 1</option>
<option value="val2">option 2</option>
<option value="val3">option 3</option>
<option value="val4">option 4</option>
</select>
I have a global select box on the page that I want to use to set all of the other select boxes on the page. They all have the same options in them.
So when I change the global drop down, how do I set all of the other ones to the same value.
All of my other select boxes have an id that starts with "inventory_location_select_"
$("#global_location").change(function(){
var globalValue = $("#global_location").val();
$("input[id^=inventory_location_select_]").val(globalValue);
});
Here is my html:
Main Select Box:
<select id="global_location">
<option selected="selected">Choose Option</option>
<option value="3542">Acme Pos 1</option>
<option value="3545">Acme Pos 2</option>
<option value="4892">Acme Test 1234567890</option>
<option value="4896">FBA CA Prep</option>
<option value="4889">FBA Prep 1</option>
<option value="4895">FBA Prep 2</option>
<option value="4897">FBA Prep 3</option>
<option value="4893">POD 3 Area 1</option>
</select>
One of my other boxes:
<select id="inventory_location_select_1">
<option>Choose Option</option>
<option value="3542">Acme Pos 1</option>
<option value="3545">Acme Pos 2</option>
<option value="4892">Acme Test 1234567890</option>
<option value="4896">FBA CA Prep</option>
<option value="4889">FBA Prep 1</option>
<option value="4895">FBA Prep 2</option>
<option value="4897">FBA Prep 3</option>
<option value="4893">POD 3 Area 1</option>
</select>
This seems so easy, I just cant figure it out.
The selector is wrong, you are trying to select input elements:
$("select[id^=inventory_location_select_]").val(globalValue);
Change:
$("input[id^=inventory_location_select_]").val(globalValue);
to
$("[id^=inventory_location_select_]").val(globalValue);
Your elements are selects, but you tried to change inputs. Either way you don't need to necessarily specify them. If you need to, use $("select[id^=inventory_location_select_]").val(globalValue);
jsFiddle example
how do I handle events for option elements?
<select>
<option value='option1'>Gateway 1</option>
<option value='option2'>Gateway 2</option>
<option value='option3'>Gateway 3</option>
</select>
When an option element is clicked I want to display a little description for the element. Any ideas how to do that?
You're going to want to use jQuery's change event. I am displaying the text of your option as an alert, but you can display whatever you want based on your needs. (You can also, obviously, put it inside another part of the page...it doesn't need to be an alert.)
$('#myOptions').change(function() {
var val = $("#myOptions option:selected").text();
alert(val);
});
Also, note, that I added an ID to your select tag so that you can more easily handle events to it (I called it myOptions).
Example: http://jsfiddle.net/S9WQv/
As specified by JasCav using jQuery you can accomplish the same in javascript using
<select onchange="alert(this.options[this.selectedIndex].text);">
<option value='option1'>Gateway 1</option>
<option value='option2'>Gateway 2</option>
<option value='option3'>Gateway 3</option>
</select>
Alternatively, onclick event of option, but note that it is not compatible on all browsers.
<select>
<option value='option1' onclick="alert(this.value);" >Gateway 1</option>
<option value='option2'>Gateway 2</option>
<option value='option3'>Gateway 3</option>
</select>
You can write it as below mention using javascript.
document.getElementById("select").addEventListener('change', (event) => {
console.log(event.target.value)
});
<select id="select">
<option value='option1'>Gateway 1</option>
<option value='option2'>Gateway 2</option>
<option value='option3'>Gateway 3</option>
</select>