Posting div/text when box checked - javascript

I'm relatively new to JS and was looking for an article or method in which to accomplish the following - be it a form or just JS. (Would like to avoid PHP.)
I have a series of check boxes call them box 1 - 4, which when any one is checked should either show a div or post text to a particular div on the page.
Example: when box 1 is checked div A posts "Box one has been checked."
I'm not certain how to refine my searches to find an example of what I'm looking for but did find a jsfiddle with a similar technique this posts a textbox under the checkbox when activated.
DEMO
<input id="chk" type="checkbox" value="results" />Results
<div id="formContainer"></div>
var textboxId = 0;
function CreateTextbox() {
var textBox = document.createElement("input");
textBox.setAttribute("type", "textbox");
textBox.setAttribute("id", textboxId);
textboxId++;
return textBox;
}
document.getElementById("chk").onclick = function () {
if (textboxId == 0) {
document.getElementById("formContainer").appendChild(CreateTextbox(textboxId));
textboxId = 1;
} else if (textboxId == 1) {
document.getElementById("formContainer").innerHTML = '';
textboxId = 0;
//The code to remove the previosuly made textbox
}
}
Any direction or code ideas are appreciated. Thanks!

Hope this is what you are expecting.
$('.chkbox').on('click',function(){
if($(this).is(':checked')) //check if checkbox is checked or unchecked
{
$(this).next('.formContainer').html('<div class="new">'+$(this).data('detail')+'</div>');
//get detail to add from the clicked checkbox's data-* attribute
}
else
{
$(this).next('.formContainer').html('');
//just empty the html below it
}
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<input id="chk" data-detail="Box one has been checked." class="chkbox" type="checkbox" value="results" />Results
<div class="formContainer"></div>
<input id="chk2" data-detail="Box two has been checked." class="chkbox" type="checkbox" value="results" />Results
<div class="formContainer"></div>
<input id="chk3" data-detail="Box three has been checked." class="chkbox" type="checkbox" value="results" />Results
<div class="formContainer"></div>
<input id="chk4" data-detail="Box four has been checked." class="chkbox" type="checkbox" value="results" />Results
<div class="formContainer"></div>
Add detail for each checkbox in its data-detail property. Refer html above
Extenal Demo
Update
To display all the text in a single div you can just refer the target element as below:
$('.chkbox').on('click',function(){
if($(this).is(':checked'))
{
$('.formContainer').html('<div class="new">'+$(this).data('detail')+'</div>'); //directly refer the element
}
else
{
$('.formContainer').html('');
}
});
Updated demo

Not sure if this is what you really need, but this should help you get started, It also requires jquery
HTML
<input class="mychk" type="checkbox" value="Box 1 is Check" />Box 1<br>
<input class="mychk" type="checkbox" value="Box 2 Box is Check" />Box 2<br>
<input class="mychk" type="checkbox" value="Box 3 Box is Check" />Box 3<br>
<input class="mychk" type="checkbox" value="Box 4 Box is Check" />Box 4
<div class="showcheck">I'll Be Overwritten When Checkbox is check</div>
jQuery
(function($) {
//run for each input box
$('.mychk').each( function() {
// detect change action
$(this).change( function() {
// if the checkbox is check
if( $(this).is(':checked') ) {
//insert checkbox value in showcontent div
$('.showcheck').html( $(this).val() );
} else {
// if uncheck, assign default value
$('.showcheck').html( 'Default Content' );
}
});
});
})(jQuery);
Demo here

Pure JavaScript answer:
HTML:
<div id="checkboxes">
<input id="one" type="checkbox"></input>
<input id="two" type="checkbox"></input>
<input id="three" type="checkbox"></input>
</div>
<div id="answer"></div>
JS:
[].forEach.call(document.getElementById("checkboxes").children, function(element) {
element.onclick = function () {
document.getElementById("answer").innerHTML = element.id + " " + element.checked;
}
});
JSfidle

Related

jQuery checking radio box status and showing an element

I'm trying to show a div of another set of radio boxes but only depending on which radio button is first selected.
If option option one is selected, I would like condition one div to show and if option two is selected I would like condition two div to show.
$(document).ready(function() {
$('#condition-one').hide();
$('#condition-two').hide();
if ($("id=[option-one]").is(":checked")) {
$('#visible-condition-one').show("slow");
} else if ($("id=[option-two]").is(":checked")) {
$('#visible-condition-two').show("slow");
};
});
<div id="always-visible">
<label class="control-label">Would you like option 1 or option 2</label><br>
<label class="radio-label"><input type="radio" id="option-one" name="option-info"> Option 1</label>
<label class="radio-label"><input type="radio" id="option-two" name="option-info"> Option 2</label>
</div>
<div id="condition-one">
<label class="control-label">If you pick option 1, you see this div</label><br>
<label class="radio-label"><input type="radio" id="option-three" name="option-info-group-two"> Option 3</label>
<label class="radio-label"><input type="radio" id="option-four" name="option-info-group-two"> Option 4</label>
</div>
<div id="condition-two">
<label class="control-label">If you pick option 2, you see this div</label><br>
<label class="radio-label"><input type="radio" id="option-five" name="option-info-group-three"> Option 5</label>
<label class="radio-label"><input type="radio" id="option-six" name="option-info-group-three"> Option 6</label>
</div>
$(document).ready(function() {
$('#condition-one').hide();
$('#condition-two').hide();
$("#option-one").on("change", function() {
if($(this).is(":checked")) {
$('#condition-one').show("slow");
}
});
$("#option-two").on("change", function() {
if($(this).is(":checked")) {
$('#condition-two').show("slow");
}
});
});
In your code, the action must be taken on user input, in this case, a radio box. You must attach a 'change' event to your radio boxes and when user changes status, the callback function is triggered.
How about the following:
//Cache our deciding radio buttons
var $radio = $('#always-visible :radio'),
//An array of the available radio/div identifiers
ids = ['one', 'two'];
//Bind an event to your deciding radio buttons
$radio.change(function(){
//That will loop through your radio buttons
$.each(ids, function(_, n){
//See if this one is checked
var checked = $('#option-' + n).prop('checked');
//If so, show the relevant block, otherwise hide it
$('#condition-' + n).toggle(checked);
});
//Trigger the event on page load
}).change();
JSFiddle
i just did something similar(working)
<html>
<head>
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
<script>
$(document).ready(function() {
$('#condition-one').hide();
$('#condition-two').hide();
$(".radio-label").on("change", function() {
if ($('.radio-label#1').is(':checked')) { // if the radiolabel of id=1 is checked
$('#condition-one').show("slow"); //show condition one
$('#condition-two').hide();
} else if ($(".radio-label#2").is(":checked")) {
$('#condition-two').show("slow");
$('#condition-one').hide("slow");
}
});
});
</script>
</head>
<body>
<input type="radio" class="radio-label" id="1" name="option-info"></input>
<input type="radio" class="radio-label" id="2" name="option-info"></input>
<div id="condition-one">
test1
</div>
<div id="condition-two">
test2
</div>
</body>

Possible to add CSS to some JS to style disabled checkbox text

I'm using a bit of JS to limit the amount of checkboxes that a user can select in a form I am working on. With this JS, once the limit of 2 is reached, the remaining checkboxes are greyed out.
However, I am using other JS that removes the actual checkbox so that I can style the form anyway I like, so now when the limit is reached, there is no visual cue that the remaining choices cannot be selected.
I am hoping there is a way to style the text in the remaining choices to grey out when the limit of choices is reached.
Here is the JS I am using that greys out the checkboxes. Can I add a css style to this to do what I need?
$('input:checkbox[name="board_colors[]"]').on('change', function () {
var nightLifeLimit = $('input:checkbox[name="board_colors[]"]:checked').length;
if (nightLifeLimit == 2) {
$('input:checkbox[name="board_colors[]"]').each(function () {
if ($(this).is(':checked')) {
return;
}
else {
$(this).prop('disabled', true);
}
});
}
else {
$('input:checkbox[name="board_colors[]"]').each(function () {
$(this).prop('disabled', false);
});
}
});
HTML for the checkbox section of the form
<fieldset>
<legend>Choose color(s) <small class="fineprint">*choose up to two</small></legend>
<ul>
<li><input type="checkbox" class="checkbox" id="bright_green" value="Bright Green" name="board_colors[]" title="Please choose a color(s)" required minlength="1">
<label for="bright_green">Bright Green</label></li>
<li><input type="checkbox" class="checkbox" id="teal_blue" value="Teal Blue" name="board_colors[]">
<label for="teal_blue">Teal Blue</label></li>
<li><input type="checkbox" class="checkbox" id="sea_blue" value="Sea Blue" name="board_colors[]">
<label for="sea_blue">Sea Blue</label></li>
<li><input type="checkbox" class="checkbox" id="purple" value="Purple" name="board_colors[]">
<label for="purple">Purple</label></li>
<li><input type="checkbox" class="checkbox" id="magenta_dark_pink" value="Magenta Dark Pink" name="board_colors[]">
<label for="magenta_dark_pink">Magenta/Dark Pink</label></li>
<li><input type="checkbox" class="checkbox" id="watermelon_red" value="Watermelon Red" name="board_colors[]">
<label for="watermelon_red">Watermelon Red</label></li>
<li><input type="checkbox" class="checkbox" id="true_red" value="True Red" name="board_colors[]">
<label for="true_red">True Red</label></li>
<li><input type="checkbox" class="checkbox" id="orange" value="Orange" name="board_colors[]">
<label for="orange">Orange</label></li>
</ul>
<span><label for="board_colors[]" class="error"></label></span>
</fieldset>
I'd personally suggest adding a class to the parent <li> element and then styling the text of the <label> using CSS:
$('input:checkbox[name="board_colors[]"]').on('change', function () {
// cache your inputs for repeated access:
var inputs = $('input[type="checkbox"][name="board_colors[]"]'),
// using the cached jQuery object, filtering for the :checked elements:
nightLifeLimit = inputs.filter(':checked').length;
// iterating over each of the elements:
inputs.each(function () {
// 'this' is the current input:
$(this)
// disabling if it's not checked *and* if the limit is reached:
.prop('disabled', !this.checked && nightLifeLimit == 2)
// moving to the closest 'li' ancestor:
.closest('li')
// adding the class if the checkbox is disabled, removing if not:
.toggleClass('disabled', this.disabled);
});
});
JS Fiddle demo.
That said, if you move the <input /> elements before the <label> elements, giving:
<fieldset>
<legend>Choose color(s) <small class="fineprint">*choose up to two</small></legend>
<ul>
<li>
<input type="checkbox" class="checkbox" id="bright_green" value="Bright Green" name="board_colors[]" title="Please choose a color(s)" required="" minlength="1" />
<label for="bright_green">Bright Green</label>
</li>
<!-- others removed for brevity -->
</ul> <span><label for="board_colors[]" class="error"></label></span>
</fieldset>
You could simply use CSS to style the sibling <label> elements:
input[type=checkbox]:disabled + label {
color: #ccc;
}
JS Fiddle demo.
References:
closest().
each().
filter().
toggleClass().
One solution is you set a class to parent element that tells us that the amount of maximum allowable item is selected.
Then apply with css gray text. Example code
CSS
.max-element input:not(:checked) + label {color: lightgray;}
SJ
$('input:checkbox[name="board_colors[]"]').change(function () {
var nightLifeLimit = $('input:checkbox[name="board_colors[]"]:checked').length;
if (nightLifeLimit > 1) {
$('input:checkbox[name="board_colors[]"]').each(function () {
$(this).is(':checked') ? null : $(this).prop("disabled", true);
});
$(this).closest('ul').addClass('max-element');
}
else {
$('input:checkbox[name="board_colors[]"]').prop('disabled', false);
$(this).closest('ul').removeClass('max-element');
}
});
Note: Attribute minlength not allowed on element input. You can use data-minlength="1".

Show/hide div based on checkbox value

When the user checks 'student'(check-1). The 2 checkbox values are supposed to disappear and reveal a text input div. As of right now I've got the input-reveal down. But I can't seem to get the checkboxes to disappear.
I've tried:
$(function () {
$('#check-1').change(function () {
$('.name').toggle(this.checked);
$('#check-1').hide();
$('#check-2').hide();
}).change();
});
But that doesn't work. How do I hide the checkboxes once 'student' is checked? Any idea's?
Here is a small fiddle . Thanks for your help in advance.
See the code below:
$(".my-check").change(function() {
if ( $(this).is(':checked') ) {
$(".my-box").show();
} else {
$(".my-box").hide();
}
});
More details in:
http://jsfiddle.net/marloscarmo/vMFQd/
wrap your textboxes with a div, say "thisWrapper"
<div id="thisWrapper">
<input type="checkbox" id="check-1" class="checkchoice staff" required><label for="check-1" class="choice staff">Staff</label>
<input type="checkbox" id="check-2" class="checkchoice student" required><label for="check-2" class="choice student">Student</label>
</div>
and in the change event you posted add:
$("thisWrapper").hide();
that should hide both checkboxes at once. Of course you'll have to add a "cancel" or "Reset" button to show the checkboxes again.
or you could give the checkboxes both a new class name like "mycheckboxes" and call this:
$(".mycheckboxes").click(function() {
$('#check-1').hide();
$("#check-2").hide();
});
* HERE"S THE FULL EXAMPLE I GOT WORKING IN FIDDLER **
Try this instead:
<div id="thisWrapper">
<input type="checkbox" id="check-1" class="checkchoice" required><label for="check-1" class="choice staff">Staff</label>
<input type="checkbox" id="check-2" class="checkchoice" required><label for="check-2" class="choice student">Student</label>
</div>
<div id="nameinput">
<input type="text" placeholder="So what's your name?" />
</div>
<script>
$(function() {
$(".checkchoice").change(function() {
$("#thisWrapper").hide();
$("#nameinput").show();
});
});
</script>

Change an onclick value with javascript

I'm pretty new to JS and maybe this is a very banal questions but I still can't figure out what's wrong. I have this simple html code:
<span>1</span>
<input id="check1" type="radio" value="a1"/>
<span>2</span>
<input id="check2" type="radio" value="b2"/>
<span>3</span>
<input id="check3" type="radio" value="c3"/>
<span>4</span>
<input id="check4" type="radio" value="a4"/>
<span>5</span>
<input id="check5" type="radio" value="b5"/>
<input id="red" type="button" value="Go" onclick=""/>
What i would like to achieve is, based on the radio checked change the onclick property.
For example, if check1 and check2 are checked go to google.com, if check1 and check3 go to jsfiddle.net etcetera. So I wrote a simple Javascript:
window.onchange = function redirect(){
if (document.getElementById('check1').checked && document.getElementById('check2').checked) {
location.href='www.google.com';
// document.getElementById('red').onclick="www.google.com"
}
else if (document.getElementById('check1').checked && document.getElementById('check3').checked) {
location.href='www.jsfiddle.net';
// document.getElementById('red').onclick="window.open('www.jsfiddle.net')"
}
}
Here You can find a JS Fiddle.
What I thought to do was to set the onclick property like I did with an image, using getElementById and then setting his source, so I wrote document.getElementById('red').onclick="window.open('random page')" but for some reason that I can't understand it doesn't work.
Questions:
1) As you can see in my code i wrote a location.href='address' that obviously doen't wait for the user to click the button, so that's not a solution, how can I make this work?
2)Is there a way to make this piece of code more scalable? What I mean is, in the future if I want to add another radio, I would have to modify manually the code and insert another else if, I thought about something like:
var radio = document.getElementByName('radio') //not sure if this is the right getElement
for (var i=1; i<radio.lenght; i++){
if radio[i].checked{ //is this right?
for (var n=i+1; n<radio.lenght; n++){
if radio[n].checked{
document.getElementById('red').onclick="window.open('random page')"
}
}
}
Any suggestion to my code is welcome.
​
Try out this in JS Fiddle. It contains how you can listen the onclick event of a button and to get the checked value of a radio button.
HTML part:
<form action="">
<input type="radio" name="vehicle" value="Yes" id='yes'>Yes<br>
<input type="radio" name="vehicle" value="No" id='no'>No
</form>
<input id="red" type="button" value="let's go"/>
JS part:
document.getElementById('red').onclick = function() {
if (document.getElementById('yes').checked) {
alert('I have a Vehicle.');
} else if(document.getElementById('no').checked) {
alert('I don\'t have a Vehicle.');
} else {
alert('No answer.');
}
}
If you use radio buttons, and you want only one to be selectable to the user at a time you have to set the same name attribute to them.
You can also make use of the value property of radio buttons for storing the redirection URL.
Here is a more useful example for you.
HTML part:
<form action="">
<input type="radio" name='redirect' value='https://www.google.com/' id='google'>Google<br />
<input type="radio" name='redirect' value='http://www.jsfiddle.net/' id='jsFiddle'>JS Fiddle<br />
<input type="radio" name='redirect' value='https://www.facebook.com/' id='Facebook'>Facebook
</form>
<input id="red" type="button" value="let's go"/>
JS part:
document.getElementById('red').onclick = function() {
var options = document.getElementsByName('redirect'),
length = options.length,
i = 0;
for (i; i < length; i++) {
if (options[i].checked) {
window.open(options[i].value);
}
}
}
if (document.getElementById('check1').checked&&document.getElementById('check2').checked)
{
document.getElementById('red').onclick=function(){
window.location.href ='http://www.google.com';
};
}
This code binds the function to the onclick event of element with id='red'. So add a bunch of such conditions and change the onclick binding whenever any radio button is checked/unchecked.

hiding div based on unchecking checkboxes

I have multiple checkboxes in a form. Based on clicking those checkboxes, I show a div section. But if I uncheck even one checkbox, that div section gets hidden. How do I make sure that div section is hidden only if all checkboxes are unchecked. Crude way can be to write my own 'display' method which will check if all checkboxes are unchecked and then hide the div section. Any easier solution??
HTML:
<input type="checkbox" class="group" name="check1">
<input type="checkbox" class="group" name="check2">
<input type="checkbox" class="group" name="check3">
<input type="checkbox" class="group" name="check4">
jQuery:
$(function() {
var $checks = $('input:checkbox.group');
$checks.click(function() {
if($checks.filter(':checked').length == 0) {
$('#div').hide();
} else {
$('#div').show();
}
});
});
The following code will show the div if one or more checkboxes has been checked:
jQuery
Version 1:
$("input[name='mycheckboxes']").change(function() {
$("#showme").toggle($("input[name='mycheckboxes']:checked").length>0);
});
Version 2 (more efficient):
var MyCheckboxes=$("input[name='mycheckboxes']");
MyCheckboxes.change(function() {
$("#showme").toggle(MyCheckboxes.is(":checked"));
});
HTML
<input type="checkbox" name="mycheckboxes" />
<input type="checkbox" name="mycheckboxes" />
<input type="checkbox" name="mycheckboxes" />
<input type="checkbox" name="mycheckboxes" />
<div id="showme" style="display: none">Show me</div>
Code in action (Version 1).
Code in action (Version 2).
--- Different Checkbox Names Version ---
For different named checkboxes, wrap them in a DIV with an identifier. E.g.
jQuery
var MyCheckboxes=$("#checkboxgroup :checkbox");
MyCheckboxes.change(function() {
$("#showme").toggle(MyCheckboxes.is(":checked"));
});
HTML
<div id="checkboxgroup">
<input type="checkbox" name="mycheckbox1" />
<input type="checkbox" name="mycheckbox2" />
<input type="checkbox" name="mycheckbox3" />
<input type="checkbox" name="mycheckbox4" />
</div>
<div id="showme" style="display: none">Show me</div>
This code in action.
Not really, you need Javascript for this one... Or maybe... Let's say:
<html>
<head>
<style type="text/css">
#input_container > input + input + input + div {display:none}
#input_container > input:checked + input:checked + input:checked + div {display:block}
</style>
</head>
<div id="input_container">
<input type="checkbox">blah1
<input type="checkbox">blah2
<input type="checkbox">blah3
<div>To show/hide</div>
</div>
</body>
</html>
I'd create a function that uses a variable that tracks the number of checkboxes checked:
var numberOfChecks = 0;
function display(ev) {
var e = ev||window.event;
if (this.checked) {
numberOfChecks++;
} else {
numberOfChecks--;
}
if (!numberOfChecks) {
//hide div code
} else {
//display div code
}
}
Use that function for each onClick event for every checkbox. In the ideal world this would be done inside some initialization function so that numberOfChecks and display aren't in the global namespace.
Plain Javascript:
HTML
<div id="checkboxes">
<input type="checkbox" name="check1">
<input type="checkbox" name="check2">
<input type="checkbox" name="check3">
<input type="checkbox" name="check4">
</div>
<div id="hiddendiv"><!-- more stuff --></div>
Javascript
(function() { //Create clousre to hide the checked variable
var checked = 0;
var inputs = document.getElementById('checkboxes').getElementsByTagName('input');
for (var i=0, l=inputs.length; i<l; i++) {
if (inputs[i].type == 'checkbox') {
if (inputs[i].checked) checked++; //Count checkboxes that might be checked on page load
inputs[i].onchange = function() {
checked += this.checked ? 1 : -1;
var hiddendiv = document.getElementById('hiddendiv');
if (!checked) hiddendiv.style.display = "none";
else hiddendiv.style.display = "";
};
}
}
}());
The other option is to simply iterate through each checkbox every time the change event is fired rather than relying on counting, which is probably more error prone. Obviously jQuery is more concise, but a little verbosity never hurt anyone.
function toggleCheckbox(id) {
if ($("input[id=" + id + "]").is(':checked')) {
$( "#"+id ).prop( "checked", false );
} else {
$( "#"+id ).prop( "checked", true );
}
}
Just pass the id of your checkbox

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