Hey guys so I am creating input elements within a div when I click on a specific radio button with a javascript function.
It works great but when I first load the form the input elements dont appear in the div because the radio button has not been "clicked yet" although one of the radio buttons is default checked.
Basically if its checked I want them to appear, so on body load I have to call a function that checks the radio button I want default and I have to manually display the corresponding input elements that would appear if I had clicked the radio button.
This seems like a dumb work around of what I am trying to achieve, any ideas?
<body onload="startup()">
<input type="radio" name="type" onclick="createInput()" id="testradio" value="test">test</input>
<div id="area">
</div>
</body>
function startup()
{
document.getElementById("testradio").checked = true
createInput();
}
function createInput()
{
var testinput = "<input name='options' value='testing' type='checkbox'>test<br>"
document.getElementById("area").innerHTML = testinput
}
You should set the default value and then call the event. (say onchange)
something like this:
document.getElementById('elID').onchange();
this will then let your event listener fire as if the value where changed in the ui not in code.
Related
I’m trying to make a simple show when checkbox is checked kind of section but am unable to get a hold of the element because the IDs of the element are assigned dynamically by PHP.
The element will be inside a foreach loop so there will be multiple instances of it with dynamically given IDs.
example:
//Laravel blade template
<element id="attrb{{ $elem->id }}> "></element>
//Javascript
if ($("#attrb*ID").is(":checked")) {
$("#attrbs-container").show();
} else {
$("#attrbs-container").hide();
}
With Jquery
$('input[id^="attrb"]').change(function(e){
if($(this).is(':checked')) console.log($(this).prop('id'));
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<input type="checkbox" id="attrb1" value="1" />
Run, and check the box. You can replace console.log with your .show or whatever.
The selector input[id^="attrb"] means an input with an id that ^= starts with attrb. You could also use input[type="checkbox"] if these are the only checkboxes you have, but it's less specific.
Change vs Click
change fires when the data (state) of the element changes. click will trigger anytime you click. In this case it probably doesn't matter too much which you use. A better example of change vs click is using radio buttons, and clicking an already checked radio. Checkboxes un-click when checked, radio buttons not so much. I'm just in a habit of using change over click for state changes.
$('input[id^="attrb"]').click(function(e){
if($(this).is(':checked')) console.log($(this).prop('id'));
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<input type="radio" id="attrb1" value="1" />
Run and click the radio 2x. It fires 2 times.
$('input[id^="attrb"]').change(function(e){
if($(this).is(':checked')) console.log($(this).prop('id'));
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<input type="radio" id="attrb1" value="1" />
Do the same thing here, but with change. That's the difference.
DYNAMIC vs Dynamic
What I mean here is DYNAMIC is something that changes at run time on the client, Dynamic is static HTML where the ID changes on the server side only. For DYNAMIC you want to use on like this
$(someparent).on('change', 'input[id^="attrb"]', function(e){ ... });
Where someparent is a static element that doesn't change at runtime. This will use event delegation and "bubbling" to find the content that was changed on the client side.
I don't think you meant DYNAMIC but I included it just in case.
Cheers!
you could create a function with a callback if you're assigning the id with javascript (after an ajax request)
function addID(add, callback)
Then use the funciton:
addId(function(){
//dynamically add ID
}, function(){
// callback function
if ($(“#attrb*ID”).is(":checked")) {
$(“#attrbs-container").show();
} else {
$(“#attrbs-container").hide();
}
})
In my project, I have a series of inputs, all of type radio button. I want to add functionality where these inputs can be deleted simply by clicking on the little bubble (the bubble that a radio button is). Here is my code so that I can do this:
$('#newAnswers input').click(function(){
var $textToDelete = $(this).val();
$(this).remove();
});
the reason why I'm assigning the value of the radio button to a textToDelete variable is that usually when you have radio buttons in HTML, you'll have text next to it to describe what that radio button is for. I'm creating a variable to hold this value so that I can delete it from the div manually because the code above works only for removing the radio button, and not the description (or I suppose you could call it the value as well) next to it. The code above also works as expected. HOWEVER, once I implement the functionality to delete the description (or value) next to radio button, the code doesn't work as expected. Here is my implementation:
$('#newAnswers input').click(function(){
var $textToDelete = $(this).val();
$(this).remove();
// NEW LINE
$('#newAnswers').html($('#newAnswers').html().replace($textToDelete, ''));
});
With this click function, after you click a radio button, it deletes, but if you click a second, or a third, or a fourth, or so on, the radio buttons will NOT delete. In fact, clicking on them only fills them in (or bubbles them in) as if you're just selecting a radio button normally. However, the FIRST radio button you click with this function works as expected. However, any radio buttons you click after that will not delete and I don't know why.
HTML Structure:
<div id='newAnswers'>
<input type="radio" value="answer1" name="question">answer1<br>
<input type="radio" value="answer2" name="question">answer2<br>
<input type="radio" value="answer3" name="question">answer3<br>
<input type="radio" value="answer4" name="question">answer4<br>
</div>
you can add span to the text,
<input type="radio" value="answer1" name="question"><span>answer1</span><br>
then
$('#newAnswers input').click(function(){
$(this).next().remove();
$(this).remove();
});
If you want to delete a DOM Element you can use .remove() function. this is the usage of .remove()
$(document).ready(function(){
$('.removebut').click(function(){
$('.removeme').remove();
});
})
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div class="removeme">Click to remove me</div>
<button class="removebut">Remove</button>
Or if you want to remove the value of input, you can set value to "" with jquery .val()function.
usage of .val()
$(document).ready(function(){
$('.removebut').click(function(){
$('.removeme').val("");
});
})
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<input type="text" class="removeme" value="Click To Remove"/>
<button class="removebut">Remove</button>
I have one notification on the web, when I click on it, it will open new popup, the save button is default disable, this popup is one kind of window that composed from many elements (list of radio check boxes of many id of goods have just imported to my shop, from that I can choose one or multiple id to attach them to one shelf, and I can do the second time to attach other/others to another shelf, the name of shelf will display under the name of kind of ids...and many others elements).
Question is, how can I inspect that there is any data change (there is any id already attached or cancel attach) in order to enable the button again by Javascript.
.
Thank you!
if what you want is to "enable" the button just add the code to the onClick event of the "list radio check" controls, something like:
<form action="">
<input type="radio" onclick="activate()" name="good1" value="1">12345746<br/>
<input type="radio" onclick="activate()" name="good2" value="2">456548765<br/>
<input type="radio" onclick="activate()" name="good3" value="3">54654654546<br/>
<button id="saveButton" disable> save</button>
</form>
<script>
function activate(){
document.getElementById("saveButton").disabled = false;
//the code that enable your button, what ever serve you better...
</script>
or add an event listener to the click event on all the radio buttons, which will do the same (because is "the same")
let rb = document.getElementsByTagName("input");
for(let idx=0; idx<rb.length; idx++){
if(rb[idx].getAttribute("type") == "radio"){
rb[idx].addEventListener("click", function(){
document.getElementById("saveButton").disabled = false;
}
}
}
which again, do the same ;)
Hope it helps.
Example on JS FIddle.
The question is:
If the first click is on the radio button, it behaves normally; But if the first click is on span text (i.e. aaaa), it can not get the checked radio.
Please tell me why and how I can make it the same.
This code, which happens when the radio button is clicked:
var obj = $(e.target||e.srcElement).parent();
score = obj.find('input:checked').val();
Puts the parent in the obj variable, which is the containing DIV. This contains both of the radio buttons. It then finds the FIRST checked input element in that DIV, which is always the one with the 'first' value after it is checked.
You should just get the value of the item which was clicked:
score = $(e.target||e.srcElement).val();
This can be rewritten as
score = $(this).val();
Here's a working example: http://jsfiddle.net/RPSwD/10/
See new fiddle.
The problem is this line:
score = obj.find('input:checked').val();
Change it to:
score = $(this).val();
The reason for this is that you're looking for the selected item in the div but on the first click, the item has yet to become selected. Given that the event is targeted at the radio button, you can assume that radio is the selected one.
Note also that you don't need to use e.target||e.srcElement. jQuery takes care of this for you. Use $(this) instead.
Additionally, you need to set a name on the radio buttons to stop both from becoming selected. Alternatively, if having both selected is desired behaviour, use check boxes instead.
You don't need to use any of the event properties:
var score = $(this).val(); // in your '.x' click handler
$('.y').click(function(e) {
$(this).prev('.x').click();
});
just wrap your radio button inside label tag like this
<label for="radio1">
<input type=radio class="x" id="radio1" value="First"/>
<span class="y">aaaa</span>
</label>
No need for extra jquery or javascript
check the demo here
I have a bunch of radio buttons. They each correspond to a number from 1 - 24. I want to display that number somewhere else in the page as soon as a radio button is selected. How would I do this?
Something like this:
<div id="someplace"></div>
<script type="text/javascript">
function updateText(number) {
document.getElementById("someplace").innerHTML = number;
}
</script>
<input value="1" type="radio" onclick="updateText(1)"/>1<br/>
<input value="2" type="radio" onclick="updateText(2)"/>2<br/>
...
If you want to do something more advanced, like not have to put (1) and (2) in each onclick, use something more advanced Jquery.
You create a DIV with the ID "displayNum", with "display:none" style property
Then you create an "onClick" handler to the radio buttons.
The function called from the handler would figure out which button was clicked (from the button's ID) and then change the content of the "displayNum" DIV to the number (using innerHtml property of the DIV), as well as change the "display" property of the DIV from invisible "none" to visible "block".