Develop Reference

How to show a message when a button is clicked

I want to show the following message when the button below is clicked using jQuery
<p class="msg-confirm" id="msgConf">
Great! You got this. Let's continue.
</p>
Button:
<input type="button" value="Start" class="btn-start" id="exec">
This message is set as none in CSS:
.msg-confirm{
display: none;
}
I have this function that worked before on a similar context, but without the validation. If the checkbox below is checked, I want this function working.
$("#exec").click(function(){
if($('#d3').is(':checked')){
$("#msgConf").show('slow');
}
});
Checkbox:
<input type="radio" name="image" id="d3" class="input-step1 aheadF1"/>

Let's make use of the simplicity of some of the new features of jQuery such as the .prop() method that will allow us to verify if a checkbox or radio button is checked. For the purpose of this example, I switched the input to a checkbox since it is more appropriate UX/UI wise speaking, however, this property can be verified in both controls. We will use the toggleClass() method of jQuery to toggle the class that hides the P tag and its content initially. I certainly hope this helps.
Happy coding!
$(document).ready(function () {
$("#exec").click(function () {
if ($('#d3').prop('checked')) {
$("p").toggleClass("msg-confirm");
} else {
alert("Please select the checkbox to display info.");
}
});
});
.msg-confirm {
display: none;
}
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.0/jquery.min.js"></script>
<p class="msg-confirm">
Great! You got this. Let's continue.
</p>
<input type="button" value="Start" class="btn-start" id="exec">
<input type="checkbox" name="image" id="d3" class="input-step1 aheadF1"/>

Try this
$("#exec").on("click",function (){
if($('#d3').is(':checked')){
$("#msgConf").css("display","")
}
})

How to click radio by clicking on div?

Why is my code not working? i need to simulate click on radio button. Radio button has click event.
$(".form-group").click(function() {
alert("clicked")
$(this).closest(".hotelObj", function() {
$(this).trigger("click");
})
});
.form-group {
background-color: pink;
}
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<div class="form-group">
<label for="male" style="font-weight:800;">chose
<input type="radio" value="z6" class="hotelObj" name="hotelType">
<p>description</p>
</label>
</div>

Given the markup you've provided, javascript isn't necessary for this task, unless there's some other requirement you've left out.
Since the label contains all the area that you want the click handler to affect, it should just work as is (clicking anywhere in the pink box will cause the radio button to become selected).
.form-group {
background-color: pink;
}
<div class="form-group">
<label style="font-weight:800;">chose
<input type="radio" value="z6" class="hotelObj" name="hotelType">
<p>description</p>
</label>
</div>

Your code is not working because you are using .closest() jquery method which will look for element starting from itself and then up in DOM tree.
This way element with class.hotelObj is never found.
You need to use .find() method to find .hotelObj, because it's inside .form-group.
$(".form-group").click(function() {
$(this)
.find(".hotelObj")
.trigger("click");
});

Try onClickHandled property
<input type="checkbox" onclick="onClickHandler()" id="box" />
<script>
function onClickHandler(){
var chk=document.getElementById("box").value;
//use this value
}
</script>

jQuery checked attribute not seen when using html()

I have a specific problem where I need to render a html string from the server and show it to the user. The user then clicks the checkboxes and I transform it back into a html string and save it on the server.
Problem is after the user clicks the checkboxes, the transformed HTML string does not contain the checked attribute.
Here is a snippet
$("button").on("click", function(){
console.log($("#container").html());
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div id="container">
<input type="checkbox" id="checkbox"/>
<button> Test </button>
</div>
But when I manually click the checkbox and click the button and examine the console log, the checked attribute inside the HTML string is not seen.
How can I solve this problem?

Set checked attribute manually by .attr('checked', 'checked') on change:
$("button").on("click", function() {
console.log($("#container").html());
});
$('#checkbox').change(function() {
if ($(this).is(':checked')) {
$(this).attr('checked', 'checked');
} else {
$(this).removeAttr('checked');
}
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div id="container">
<input type="checkbox" id="checkbox" />
<button> Test </button>
</div>

When you check a checkbox manually, the checked HTML attribute doesn't change.
You can change it yourself by selecting every checked checkbox and manually updating them with the jQuery :checked selector:
$('#container input[type="checkbox"]:checked').attr('checked','true');
$("button").on("click", function() {
$('#container input[type="checkbox"]:checked').attr('checked','true');
console.log($("#container").html());
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div id="container">
<input type="checkbox" id="checkbox" />
<button> Test </button>
</div>

Replacing checkboxes with images?

I am trying to replace three check boxes within an html form with three different images. The idea being that the user can select the pictures by clicking on them rather than clicking on a check box. I've been putting togther some code but can't figure out how to make all the checkboxes selectable. At the moment only the first images works when it is clicked on. Can anyone help me? I'm a real novice with javascript I'm afraid. See fiddle here
The form
<form id="form1" action="" method="GET" name="form1">
<div class="col-md-3">
<img src="https://cdn2.iconfinder.com/data/icons/windows-8-metro-style/128/unchecked_checkbox.png" title="blr" id="blr"><input type="checkbox" id="imgCheck" name="pic1" value=9></div><div class="col-md-3">
<img src="https://cdn2.iconfinder.com/data/icons/windows-8-metro-style/128/unchecked_checkbox.png" title="blr" id="blr"><input type="checkbox" id="imgCheck" name="pic2" value=12></div><div class="col-md-3">
<img src="https://cdn2.iconfinder.com/data/icons/windows-8-metro-style/128/unchecked_checkbox.png" title="blr" id="blr"><input type="checkbox" id="imgCheck" name="pic3" value=7></div>
<input type="submit" name="submit" value="Add" />
</div>
</form>
The javascript
$('#blr').on('click', function(){
var $$ = $(this)
if( !$$.is('.checked')){
$$.addClass('checked');
$('#imgCheck').prop('checked', true);
} else {
$$.removeClass('checked');
$('#imgCheck').prop('checked', false);
}
})

Why use JavaScript at all? You can do this with CSS, the :checked attribute and a label element.
input[type=checkbox] {
display: none;
}
:checked+img {
border: 2px solid red;
}
<label>
<input type="checkbox" name="checkbox" value="value">
<img src="http://lorempixel.com/50/50/" alt="Check me">
</label>

This is happening because you're using the same ID more than one. IDs should be unique. Instead of using id="blr", try using class="blr". I updated the fiddle:
http://jsfiddle.net/0rznu4ks/1/

First, as Amar said, id should be unique. Use classes for multiple elements.
Also pay attention for semicolons and closing html tags.
To your question:
use the function .siblings() to get the relevant checkbox element.
$('.blr').on('click', function () {
var $$ = $(this);
if (!$$.is('.checked')) {
$$.addClass('checked');
$$.siblings('input.imgCheck').prop('checked', true);
} else {
$$.removeClass('checked');
$$.siblings('input.imgCheck').prop('checked', false);
}
});
See demo here:
http://jsfiddle.net/yd5oq032/1/
Good luck!

adding div around link using jquery

I am adding a div around a link on click of a button. but when i click button multiple times, it adds multiple divs.
<li>
<label> </label>
<div class="deletebutton">
<label> </label>
<div class="deletebutton">
<label> </label>
<div class="deletebutton">
<input type="button" id="ctl00_ContentPlaceHolder1_ctrlAddPhotos_RadUpload1remove1" value="Remove" class="ruButton ruRemove" name="RemoveRow">
</div>
</div>
</li>
How can i make sure that it first checks if there is a div around link and then adds.
I am using following code:
var parentTag = $(".ruRemove").parent().get(0).tagName;
if (parentTag == 'LI') {
$(".ruRemove").wrap("<div class='data deletebutton'></div>");
$(".deletebutton").before("<label></label>");
} else {
var par = $('.deletebutton').parent();
if (par.is('div')) par.remove();
$(".ruRemove").wrap("<div class='data deletebutton'></div>");
var prev = $('.deletebutton').prev();
if (prev.is('label')) prev.remove();
$('.deletebutton').before("<label></label>");
}
it should become this:
<li>
<label> </label>
<div class="deletebutton">
<input type="button" id="ctl00_ContentPlaceHolder1_ctrlAddPhotos_RadUpload1remove1" value="Remove" class="ruButton ruRemove" name="RemoveRow">
</div>
</li>
when i click button. before clicking html is:
<li>
<input type="button" id="ctl00_ContentPlaceHolder1_ctrlAddPhotos_RadUpload1remove1" value="Remove" class="ruButton ruRemove" name="RemoveRow">
</li>

Here is a solution shown in a jsFiddle.
The code story is
HTML
<button id="myButton">My Button</button
JavaScript
$(function() {
$("#myButton").click(function() {
if ($(this).parent().get(0).tagName !== "DIV") {
$(this).wrap("<div class='myDiv'>");
}
});
});
What the code does is register a callback for a button click. When clicked, we ask for the parent of the button that was clicked and ask if the parent node has a tag name of "DIV" meaning it is a <div>. If it is not a div, then we wrap the button in a div and end. On the next call, the detection of the parent being a div will be true and no new div will be added.

Why don't you just use for example a function that does what you want only on the first click?
So only on the first click of that button adds the div, if you click other times the button, it wont do anything. This way you wont add multiple divs.
To do that you could use for example jQuery:
<script type="text/javascript">
$("#firstclick").one("click",function() {
alert("This will be displayed only once.");
});
</script>
You can check even the jQuery API Documentation regarding one:
http://api.jquery.com/one/