Develop Reference

Auto Input when checkbox is checked

I need some help.
I have two form input and one checkbox, like this :
When the user insert Address (Id Card) and Check the checkbox below, then Address(domicile) should be filled with the value same as address(id_card), form input in address (domicile) auto input same as in form input address (id card).
How to fix it?
Thank you

Tyr using checkbox onclick event.
function copyAddress(e) {
const checkboxValue = document.getElementById('copy-address').checked;
if(checkboxValue) {
document.getElementById('contact-address').value = document.getElementById('primary-address').value;
document.getElementById('contact-address').disabled = true;
} else {
document.getElementById('contact-address').disabled = false;
}
}
<h1>Address Details</h1>
<input type="text" id="primary-address" placeholder="Primary Address">
<label for="primary-address"> Primary Address</label><br>
<input type="checkbox" id="copy-address" name="copy" onclick="copyAddress(this)">
<label for="copy-address"> Copy address</label><br>
<input type="text" id="contact-address" placeholder="Contact Address">
<label for="contact-address"> Contact Address</label><br>

I'd handle clicks on the checkbox. In the handler, I'd copy a value from one field to the other if it's checked and clear the 2nd address if it isn't.
"use strict";
function byId(id){return document.getElementById(id);}
window.addEventListener('load', onLoaded, false);
function onLoaded(evt)
{
byId('addrsAreSameCb').addEventListener('click', onAddrsAreSameCbClicked, false);
}
function onAddrsAreSameCbClicked(evt)
{
if (this.checked == true)
{
byId('addr2').value = byId('addr1').value;
}
else
{
byId('addr2').value = '';
}
}
<input id='addr1'/><br>
<label><input type='checkbox' id='addrsAreSameCb'/>Addr 2 is same as Addr1</label></br>
<input id='addr2'/>

Checkbox Hidden Div Unchecked

I have a checkbox hidden div with text field. If checkbox is checked this text field will showed, but if checkbox unchecked text field not show. This Code :
<script type="text/javascript">
$(function () {
$("input[name='checkbox1']").click(function () {
if ($("#checkyes1").is(":checked")) {
$("#dvcheckbox1").show('lainnya');
} else {
$("#dvcheckbox1").hide('lainnya');
}
});
});
</script>
<div style="margin-left: 29%; margin-top: -2%;">
<label for="checkyes1">
<input type="checkbox" id="checkyes1" name="checkbox1" value="lainnya" />
Lainnya
</label>
<div id="dvcheckbox1" style="display: none;">
<?php echo $form->textField($model,'lainnya'); ?>
</div>
</div>
But, How this checkbox is checked if there something value on textfield? and text field shown. Because in form Update, value was show but checkbox is checked. I want checkbox is checked
For example Like this:
Click to show example

Instead use with change event with .toggle(boolean) method:
// on page load check of the div contains any text
$("#dvcheckbox1").toggle(function(){
var $v = $(this).find('input').val();
$("input[name='checkbox1']").prop('checked', $v.trim().length !== 0)
return $v.trim().length !== 0;
});
$("input[name='checkbox1']").change(function () {
$("#dvcheckbox1").toggle(this.checked);
});

There are a few things here:
1 - Better if you use document ready, because it waits until all the elements are loaded.
2 - You should hide the element$("#dvcheckbox1").hide('lainnya') when the page is loaded.
3 - A listener in the input:text is a good idea. It enables the checkbox if the textbox is empty.
Please, have a look at the next piece of code:
<div>
<label for="checkyes1">
<input type="checkbox" id="checkyes1" name="checkbox1" value="lainnya" />
Lainnya
</label>
<div id="dvcheckbox1">
<label for="myValuye"/>
<input type="text" id="myValue" name="myValue" value=""/>
</div>
</div>
<script>
$(document).ready(function() {
$("input[name='checkbox1']").click(function () {
// Always use some logs to check what line are you reaching.
console.log("Clicked checkbox!!!");
if ($("#checkyes1").is(":checked")) {
$("#dvcheckbox1").show('lainnya');
} else {
console.log("Value: " + $("#myValue").val());
$("#dvcheckbox1").hide("lainnya");
}
});
$("#myValue").bind("change paste keyup", function() {
if ($(this).val() == "") {
$("#checkyes1").removeAttr("disabled");
} else {
$("#checkyes1").attr("disabled", true);
}
});
// First of all we hide the #dvcheckbox1
$("#dvcheckbox1").hide('lainnya');
})

Script to disable a text box on selecting a radio button

I have two radio buttons
<div class="col-md-2">
#Html.RadioButtonFor(model => model.ReceiveCopyOrders, "true") Yes
</div>
<div class="col-md-3">
#Html.RadioButtonFor(model => model.ReceiveCopyOrders, "false", new { #id = "mailForOrder_no" }) No
</div>
and a text box
<div class="col-md-10">
#Html.TextBoxFor(m => m.OrderEmail, new { #class = "form-control",#id="
mailForOrder" })
</div>
If the radio NO is checked I want the textbox to be disabled.
I tried the script below
<script>
$(document.getElementById('mailForOrder_no')).checked(function () {
document.getElementById('mailForOrder').disabled = true;
});
But the checkbox is not disabled.
What am I doing wrong ?

Are you trying to do something like this.
<input type="radio" name = "rad" class="rad" value="Yes"/>Yes
<input type="radio" name = "rad" class="rad" value="No"/>No
<input type="text" id="txt" />
<input type="button" onclick="disableTextBox()" />
JavaScript Code:
function disableTextBox() {
$(".rad").each(function() {
if (this.checked && this.value == "No") {
$("#txt").attr('disabled','disabled');
}
});
}

Something like this as you are not using jQuery:
Sample fiddle
// Get radios
var rad = document.getElementsByName('mailForOrder_no');
// Disable / Enable element based on value
function disable_by_radio(w, id) {
document.getElementById(id).disabled =
w.checked && w.value === "No";
}
// Update by event
rad[0].onchange = function (e) { disable_by_radio(this, 'mailForOrder'); };
rad[1].onchange = function (e) { disable_by_radio(this, 'mailForOrder'); };
// Initial update
disable_by_radio(rad[1], 'mailForOrder');
With this HTML:
<input type="text" id="mailForOrder" />
<input name="mailForOrder_no" type="radio" value="Yes" />Yes
<input name="mailForOrder_no" type="radio" value="No" checked />No
As you are not using jQuery, the $() part, and why your code does not work, is impossible to explain as it is not part of pure Javascript.
In short, a wild guess:
Radio buttons does not have a function named checked() but an attribute. If the $() part of your code only passes the object on, then trying to call an attribute would result in an error.

Using jQuery we can do it like this:
function(){ if($('#mailForOrder_no:checked')){$("mailForOrder").attr()"disabled","disabled"} }

Can I pass a variable textarea id to a JavaScript function?

I've run into a follow-up problem with this excellent solution:
Select checkbox when clicking in textarea (JavaScript?).
I need to apply the solution to more than one textbox in the same form. Is it possible in any way to alter the code into something like this (not working):
<html>
<body>
<textarea id="iamtextarea" rows="4" cols="10" onfocus="onFocusTextArea('iamtextarea');" onblur="onBlurTextArea('iamtextarea');">Enter some text in textbox</textarea>
<input type="checkbox" name="iamcheckbox" id="iamcheckbox" checked="checked"> I am checkbox<br>
<input type="hidden" name="hiddenString" id="hiddenString" value="Enter some text in textbox">
</body>
</html>
<script type="text/javascript">
function onFocusTextArea(variableName) {
document.getElementById("iamcheckbox").checked = false;
}
function onBlurTextArea(variableName) {
if(document.getElementById(variableName).value==document.getElementById("hiddenString").value) {
document.getElementById("iamcheckbox").checked = true;
}
}
</script>
What I want to do is to pass a variable id of the textarea to the javascript function so that I can use the same function for more than one textarea. Is that possible?

See jsfiddle here. This takes an element and a checkboxid
function onFocusTextArea(checkboxId) {
document.getElementById(checkboxId).checked = false;
}
function onBlurTextArea(element, checkboxId) {
if (element.value === "") {
document.getElementById(checkboxId).checked = true;
}
}
Some sample HTML
<textarea id="iamtextareaone" onfocus="onFocusTextArea('checkboxone');" onblur="onBlurTextArea(this, 'checkboxone');"></textarea>
<textarea id="iamtextareatwo" onfocus="onFocusTextArea('checkboxtwo');" onblur="onBlurTextArea(this, 'checkboxtwo');"></textarea>
<input type="checkbox" id="checkboxone" checked="checked">Checkbox One<br>
<input type="checkbox" id="checkboxtwo" checked="checked">Checkbox Two<br>

jquery - show textbox when checkbox checked

I have this form
<form action="">
<div id="opwp_woo_tickets">
<input type="checkbox" class="maxtickets_enable_cb" name="opwp_wootickets[tickets][0][enable]">
<div class="max_tickets">
<input type="text" name="opwp_wootickets[tickets][0][maxtickets]">
</div>
<input type="checkbox" class="maxtickets_enable_cb" name="opwp_wootickets[tickets][1][enable]">
<div class="max_tickets">
<input type="text" name="opwp_wootickets[tickets][1][maxtickets]">
</div>
<input type="checkbox" class="maxtickets_enable_cb" name="opwp_wootickets[tickets][2][enable]">
<div class="max_tickets">
<input type="text" name="opwp_wootickets[tickets][2][maxtickets]">
</div>
</div>
</form>
As of now, I'm using this jquery code to show textbox when checkbox checked.
jQuery(document).ready(function($) {
$('input.maxtickets_enable_cb').change(function(){
if ($(this).is(':checked')) $('div.max_tickets').show();
else $('div.max_tickets').hide();
}).change();
});
It works fine, but it shows all textboxes when checked.
Can someone help me to fix it?
Here is the demo of my problem.
http://codepen.io/mistergiri/pen/spBhD

As your dividers are placed next to your checkboxes, you simply need to use jQuery's next() method to select the correct elements:
if ($(this).is(':checked'))
$(this).next('div.max_tickets').show();
else
$(this).next('div.max_tickets').hide();
Updated Codepen demo.
From the documentation (linked above), the next() method selects:
...the immediately following sibling of each element in the set of matched elements. If a selector is provided, it retrieves the next sibling only if it matches that selector.
Here we're selecting the next div.max_tickets element. However in your case just using next() with no parameters would suffice.

Assuming markup will stay in same order can use next()
jQuery(document).ready(function($) {
$('input.maxtickets_enable_cb').change(function(){
$(this).next()[ this.checked ? 'show' : 'hide']();
}).change();
});

Change:
if ($(this).is(':checked')) $('div.max_tickets').show();
To:
if ($(this).is(':checked')) $(this).next('div.max_tickets').show();
jsFiddle example here

Maybe try selecting the next element only?
change:
if ($(this).is(':checked')) $('div.max_tickets').show();
to:
if ($(this).is(':checked')) $(this).next('div.max_tickets').show();

Put a div across your checkbox and text box
<form action="">
<div id="opwp_woo_tickets">
<div>
<input type="checkbox" class="maxtickets_enable_cb" name="opwp_wootickets[tickets][0][enable]">
<div class="max_tickets">
<input type="text" name="opwp_wootickets[tickets][0][maxtickets]">
</div>
</div>
<div>
<input type="checkbox" class="maxtickets_enable_cb" name="opwp_wootickets[tickets][1][enable]">
<div class="max_tickets">
<input type="text" name="opwp_wootickets[tickets][1][maxtickets]">
</div>
</div>
<div>
<input type="checkbox" class="maxtickets_enable_cb" name="opwp_wootickets[tickets][2][enable]">
<div class="max_tickets">
<input type="text" name="opwp_wootickets[tickets][2][maxtickets]">
</div>
</div>
</div>
</form>
and replace your jquery code with this one below,
jQuery(document).ready(function($) {
$('input.maxtickets_enable_cb').change(function(){
if ($(this).is(':checked')) $(this).parent().children('div.max_tickets').show();
else $(this).parent().children('div.max_tickets').hide();
}).change();
});
I have tested it and it works.

While you may need a JavaScript solution for other reasons, it's worth noting that this can be achieved with pure CSS:
input + div.max_tickets {
display: none;
}
input:checked + div.max_tickets {
display: block;
}
JS Fiddle demo.
Or, with jQuery, the simplest approach seems to be:
// binds the change event-handler to all inputs of type="checkbox"
$('input[type="checkbox"]').change(function(){
/* finds the next element with the class 'max_tickets',
shows the div if the checkbox is checked,
hides it if the checkbox is not checked:
*/
$(this).next('.max_tickets').toggle(this.checked);
// triggers the change-event on page-load, to show/hide as appropriate:
}).change();
JS Fiddle demo.
Reference:
CSS:
:checked pseudo-class.
jQuery:
change().
next().
toggle().

protected void EnableTextBox()
{
int count = int.Parse(GridView1.Rows.Count.ToString());
for (int i = 0; i < count; i++)
{
CheckBox cb = (CheckBox)GridView1.Rows[i].Cells[0].FindControl("CheckBox1");
CheckBox cb1 = (CheckBox)GridView1.Rows[i].Cells[0].FindControl("CheckBox2");
CheckBox cb2 = (CheckBox)GridView1.Rows[i].Cells[0].FindControl("CheckBox3");
TextBox tb = (TextBox)GridView1.Rows[i].Cells[4].FindControl("txtration");
TextBox tb1 = (TextBox)GridView1.Rows[i].Cells[5].FindControl("txtjob");
TextBox tb2 = (TextBox)GridView1.Rows[i].Cells[6].FindControl("txtaadhar");
if (cb.Checked == true)
{
tb.Visible = true;
}
else
{
tb.Visible = false;
}
if (cb1.Checked == true)
{
tb1.Visible = true;
}
else
{
tb1.Visible = false;
}
if (cb2.Checked == true)
{
tb2.Visible = true;
}
else
{
tb2.Visible = false;
}
}
}
protected void CheckBox1_CheckedChanged(object sender, EventArgs e)
{
EnableTextBox();
}