We Keep Coding

How to make an unchecked checkbox value 0 and checked value of 1?

I'm making a simple registration form with a declaration asking if the user has read the terms and conditions but when I console log the value of the checkbox it doesn't change depending on if it's checked or not. How do I do this? I've seen other people ask the question but they're using JS libraries like jQuery which I'm not using so how do you differentiate the value from checked and unchecked just using basic JS and HTML
<div class="item">
<input type="checkbox" id="checkbox" value="1">
<label>I accept the <a id="termsLink" href="https://imgur.com/5lXi3Lc" target="_blank">Terms and Conditions</a></label>
</div>
This is the div containing the checkbox.

You can add an event handler onClick in order to achieve this:
function handleClick(cb) {
cb.value = cb.checked ? 1 : 0;
console.log(cb.value);
}
<div class="item">
<input type="checkbox" id="checkbox" value="1" onclick='handleClick(this);'>
<label>I accept the <a id="termsLink" href="https://imgur.com/5lXi3Lc" target="_blank">Terms and Conditions</a></label>
</div>

You can use the .checked method:
var checkBox = document.getElementById("checkbox");
if(checkbox.checked){
console.log("checked");
}
else{
console.log("unchecked");
}

You need to test the .checked property. To convert it to an integer, you can use the bitwise OR operator.
document.getElementById('checkbox').addEventListener('change', function(e){
let checked = this.checked;
console.log(checked);
console.log(checked | 0);
});
<div class="item">
<input type="checkbox" id="checkbox">
<label>I accept the <a id="termsLink" href="https://imgur.com/5lXi3Lc" target="_blank">Terms and Conditions</a></label>
</div>

formidable toggle switch, how to click the label?

Currently, the below HTML code only switches when you click the input (ie. the center switch).
I need the switch to happen when you click the labels (ie. Yes or No).
How to make that happen?
<div>
<span class="frm_off_label frm_switch_opt">No</span>
<label class="frm_switch">
<input type="checkbox" name="2002" id="field_2002" value="Yes" checked="checked"
data-off="No" data-sectionid="2002" data-frmval="Yes" placeholder="Yes">
<span class="frm_slider"></span>
</label>
<span class="frm_on_label frm_switch_opt">Yes</span>
</div>
What are the ways to make the click of Yes or No, do the same thing as clicking the input?

You can achieve this by setting the checked status of input -
HTML
<div>
<span class="frm_off_label frm_switch_opt">No</span>
<label class="frm_switch">
<input type="checkbox" name="2002" id="field_2002" value="Yes" checked="checked"
data-off="No" data-sectionid="2002" data-frmval="Yes" placeholder="Yes">
<span class="frm_slider"></span>
</label>
<span class="frm_on_label frm_switch_opt">Yes</span>
</div>
JS (with jquery)
$('.frm_off_label').on('click', function(){
$(this).next('label').find("input")[0].checked = false;
});
$('.frm_on_label').on('click', function(){
$(this).prev('label').find("input")[0].checked = true;
});
CSS (optioanl)
.frm_switch_opt{
cursor:pointer;
}
You can see it in action on jsfiddle
https://jsfiddle.net/guruling/tegmps9b/27/

You can use label combine with for="element_id" like for="field_2002" attribute to achieve it.
The for attribute specifies which form element a label is bound to.
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<div>
<label for="field_2002" class="frm_off_label frm_switch_opt">No</label>
<input type="checkbox" name="2002" id="field_2002" value="Yes" checked="checked"
data-off="No" data-sectionid="2002" data-frmval="Yes" placeholder="Yes">
<label for="field_2002" class="frm_on_label frm_switch_opt">Yes</label>
</div>

How can I disable all checkboxes on webpage at once?

I have several sets of checkboxes on a webpage. I want to uncheck them all with javascript. Right now, I do it by looking for the names of each set and unchecking them with FOR loops like this...
for (i=0;i<document.getElementsByName("myboxes").length;i++) {
document.getElementsByName("myboxes")[i].checked=false;}
for (i=0;i<document.getElementsByName("moreboxes").length;i++) {
document.getElementsByName("moreboxes")[i].checked=false;}
for (i=0;i<document.getElementsByName("evenmoreboxes").length;i++) {
document.getElementsByName("evenmoreboxes")[i].checked=false;}
I'm looking for a way to target them all with one loop. I could do getElementsByTagName('input') to target all INPUTS, but that's a problem because I have some radio inputs that I don't want to uncheck. Is there a way to target all checkbox inputs?
Thanks for the suggestions. I just thought of something. Each NAME I use has the word "boxes" in it, myboxes, moreboxes, evenmoreboxes. Is there a way to target the word "boxes" in in the name, like a wildcard, something like document.getElementsByName("*boxes") that way if I add a set of checkboxes at some point that I don't want to uncheck I can simply name them differently.

You can select all checked checkboxes and reset their state:
function uncheckAll() {
document.querySelectorAll('input[name$="boxes"]:checked')
.forEach(checkbox => checkbox.checked = false);
}
<input type="checkbox"/>
<input type="checkbox" name="a_boxes" checked/>
<input type="checkbox"/>
<input type="checkbox" name="b_boxes" checked/>
<input type="checkbox" name="c_boxes" checked/>
<button onclick="uncheckAll()">Reset</button>

you can use document.querySelectorAll('input[type="checkbox"]'); to get a list of them all. then run your loop

My proposal is:
document.querySelectorAll("[name=myboxes], [name=moreboxes], [name=evenmoreboxes]").forEach((e) => echecked=false);
document.querySelectorAll("[name=myboxes], [name=moreboxes], [name=evenmoreboxes]").forEach((e) => e.checked=false);
<input type="checkbox" name="myboxes" value="1" checked>1<br>
<input type="checkbox" name="moreboxes" value="2" checked>2<br>
<input type="checkbox" name="evenmoreboxes" value="3" checked>3<br>

As suggested by #imjared, you can use querySelectorAll, but you will have to iterate over it:
querySelectorAll('input[type="checkbox"]').forEach(c => c.checked = false);
Here is the doc for querySelectorAll

Hide div for Radio button selected value using jquery- Not working

I want to hide a div (AppliedCourse), when radi button value is Agent. I wrote below code but it is not working.
Any idea?
$('#HearAboutUs').click(function() {
$("#AppliedCourse").toggle($('input[name=HearAboutUs]:checked').val()='Agent');
});
<tr><td class="text"><input type="radio" name="HearAboutUs" value="Press">Press & Print media
<input type="radio" name="HearAboutUs" value="Internet">Internet
<input type="radio" name="HearAboutUs" value="Agent">Agent
<input type="radio" name="HearAboutUs" value="Friend">Friend
<input type="radio" name="HearAboutUs" value="Other" checked="checked">Other</td></tr>

Either your HTML is incomplete or your first selector is wrong. It is possible that your click handler is not being called because you have no element with id 'HeadAboutUs'. You might want to listen to clicks on the inputs themselves in that case.
Also, your logic is not quite right. Toggle hides the element if the parameter is false, so you want to negate it using !=. Try:
$('input[name=HearAboutUs]').click(function() {
var inputValue = $('input[name=HearAboutUs]:checked').val()
$("#AppliedCourse").toggle( inputValue!='Agent');
});
I have made a JSFiddle with a working solution: http://jsfiddle.net/c045fn2m/2/

Your code is looking for an element with id HearAboutUs, but you don't have this on your page.
You do have a bunch of inputs with name="HearAboutUs". If you look for those, you'll be able to execute your code.
$("input[name='HearAboutUs']").click(function() {
var clicked = $(this).val(); //save value of the input that was clicked on
if(clicked == 'Agent'){ //check if that val is "Agent"
$('#AppliedCourse').hide();
}else{
$('#AppliedCourse').show();
}
});
JS Fiddle Demo
Another option as suggested by #Regent is to replace the if/else statement with $('#AppliedCourse').toggle(clicked !== 'Agent');. This works too.

Here is the Fiddle: http://jsfiddle.net/L9bfddos/
<tr>
<td class="text">
<input type="radio" name="HearAboutUs" value="Press">Press & Print media
<input type="radio" name="HearAboutUs" value="Internet">Internet
<input type="radio" name="HearAboutUs" value="Agent">Agent
<input type="radio" name="HearAboutUs" value="Friend">Friend
<input type="radio" name="HearAboutUs" value="Other" checked="checked">Other
</td>
Test
$("input[name='HearAboutUs']").click(function() {
var value = $('input[name=HearAboutUs]:checked').val();
if(value === 'Agent'){
$('#AppliedCourse').hide();
}
else{
$('#AppliedCourse').show();
}
});

Make first Radio button checked in Loop using name attribute

I have list of Radio buttons in loop like this:
<input type="radio" name="courses" id="course_1" value="1">
<input type="radio" name="courses" id="course_2" value="2">
<input type="radio" name="courses" id="course_3" value="3">
<input type="radio" name="courses" id="course_4" value="4">
I want to make first radio checked using name attribute not id.
Here is my Fiddle : http://jsfiddle.net/8AcYg/1/

Use .first()
$('input[name="courses"]').first().prop('checked', true)
Demo: Fiddle
You can also use :first, :eq(0) or .eq(0) to do the same

$("input[name='courses']:eq(0) ").attr("checked","checked");
or
$('input[name="courses"]:eq(0)').prop('checked', true);
demo
reference attribute-equals-selector , attr , prop

Do this by setting first child's attribute to true
$('input:radio[name=courses]:first-child').attr('checked',true);
See in jsfiddle

You can do it with native document method getElementsByName or querySelector
document.getElementsByName('courses')[0].checked = true;
or
document.querySelector('[name=courses]:first-child').checked = true;