I am unable to validate the checkbox and radio button. Actually i just need to insert validation for user at least select one thing weather checkbox or radio.
see my code. that's not working for me.
<script>
$(".submit").click(function(){
var checkBoxCount = $(".jobwork:checkbox:checked").length;
if($(".jobwork:checkbox:checked").length < 1 || ($("input[name=jobwork]:checked").length <= 0)){
alert("Please select atlease one jobwork");
return false;
};
})
http://api.jquery.com/prop/#entry-examples
$(".submit").click(function(){
var isChecked= $(".jobwork")[0].prop('checked');
if (!isChecked) {
alert("Please select atlease one jobwork");
return false;
};
})
You have to check whether the checkboxes has a prop called checked in them. It is available only if the checkbox is checked.
$(".submit").click(function(){
var checked = $(".jobwork").prop('checked');
if(!checked){
alert("Please select atlease one jobwork");
return false;
};
})
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<input type="checkbox" class="jobwork" name="check">
<input type="checkbox" class="jobwork" name="check">
<input type="checkbox" class="jobwork" name="check">
<br>
<input type="button" class="submit" value="submit">
Related
I have two checkboxes in a form. onclick if a checkbox called email is unchecked how can I get the other checkbox to also uncheck (if it is checked) ?
document.getElementById('email').onclick = function() {
if (!this.checked) {
!document.getElementById("other").checked;
} else {
// if not checked ...
}
};
Am I completey barking up the wrong tree? Any help appriciated
To synchronize the checking of the both at the same time you need just to use this.checked of the first clicked one on the checked attribute of the second one like :
document.getElementById("other").checked = this.checked;
NOTE : That will work on one way, what means the check will be synchronized just when you click on the first checkbox that you've attached the click event to.
document.getElementById('email').onclick = function() {
document.getElementById("other").checked = this.checked;
};
<input id="email" type="checkbox" /> CHECKBOX 1
<br>
<input id="other" type="checkbox" /> CHECKBOX 2
You can make it like :
<form id="test" action="#" method="post">
<div>
<input type="checkbox" name="check" id="check"/>
</div>
<div>
<input type="checkbox" name="check2" id="check2"/>
</div>
</form>
document.getElementById('check').onclick = function() {
if (!this.checked) {
document.getElementById("check2").checked = false;
} else {
// other logic ...
}};
Test it online on jsfiddle : https://jsfiddle.net/3dtq0w8x/
In your test code you are not setting the checked property of "other" to any value.
You are just reading its value, then inverting it (with !).
You could try:
document.getElementById("other").checked = false;
You can add event listener to email checkbox (which is a good practice) and then check if it is check or not and deal with the other checkbox according to that
For example
var ckb = document.getElementById('email')
ckb.addEventListener("click", function(e){
if(!e.target.checked)
document.getElementById('ot').checked = false;
})
<input type="checkbox" name="na" value="email" id="email">Email<br>
<input type="checkbox" name="na" value="other" id="ot">Other
This should help
function check() {
if(document.getElementById("email").checked){
document.getElementById("other").checked = true;
}else{
document.getElementById("other").checked = false;
}
}
HTML
<input type='checkbox' id='email' name='checkbox' onclick="check()" >email
<input type='checkbox' id='other' name='checkbox'>other
I'm a beginner in JavaScript. I have several radio buttons on my dynamic page and I want to create a script to make the following:
HTML:
<input type="radio" id="elemainfoto">
<input type="radio" id="elemainfoto">
<input type="radio" id="elemainfoto">
JavaScript:
var radio = '#elemainfoto',
if(radd.value == 0) {
radd.checked the first radio element,
} else {
keep the way it is,
}
If none of the radio elements are marked, mark the first compulsory.
I your expectation is that the first item get selected by default, then you should use HTML and not javascript for that and please note that you should not use two HTML elements with the same id in your case you should either replace by a class and/or add unique Ids for elements.
<input type="radio" class="elemainfoto" id="item1" checked>
<input type="radio" class="elemainfoto" id="item2">
<input type="radio" class="elemainfoto" id="item3>
Updated the answer based on RobG comment.
Something like this in pure JS (I changed ids to classes id should be unique):
var radio = document.querySelectorAll('.elemainfoto'),
checked = false;
for (var i = 0; i < radio.length; i++) {
if (radio[i].checked) {
checked = true;
break;
}
}
if (!checked) {
radio[0].checked = true;
}
else {
alert('something is checked')
}
A little shorter with jQuery:
var $radio = $('.elemainfoto');
if (!$radio.filter(':checked').length) {
$radio[0].checked = true;
}
else {
alert('something is checked')
}
using 'id' attribute in html with the same value more than once is invalid, you should use "name" for an input.
HTML:
<input type="radio" name="elementinfoto" value="1" />
<input type="radio" name="elementinfoto" value="2" />
<input type="radio" name="elementinfoto" value="3" />
JavaScript:
var radio = document.getElementsByName('elementinfoto'); // get all radio buttons
var isChecked = 0; // default is 0
for(var i=0; i<radio.length;i++) { // go over all the radio buttons with name 'elementinfoto'
if(radio[i].checked) isChecked = 1; // if one of them is checked - tell me
}
if(isChecked == 0) // if the default value stayed the same, check the first radio button
radio[0].checked = "checked";
example: http://jsfiddle.net/yxm4N/2/
A radio button group is formed by giving radio buttons the same name. An ID is optional and usually not necessary. If an ID is provided, each should have a different value. And the buttons should have a value so that there's a point to their existence.
To have one button selected by default, simply set the chosen button's checked attribute:
<form id="foo">
<input type="radio" name="elemainfoto" valu="0" checked>0<br>
<input type="radio" name="elemainfoto" valu="1">1<br>
<input type="radio" name="elemainfoto" valu="2">2<br>
<input type="reset">
</form>
Now if no other button is selected, or the form is reset, one button will be selected. Note that if you do not set a button as the default selected, then once a user checks a button, the only way to deselect it is to select a different radio button in the same group, or use a reset button (if provided).
If you want to set the default checked button in script, there are a couple of options. One is:
var buttons = document.getElementsByName('elemainfoto');
buttons[0].defaultChecked = true;
If you really want to check if one is selected, add a button like the following to the form:
<input type="button" value="Check buttons" onclick="checkButtons(this);">
Then the checkButtons function can be:
function checkButtons(el) {
var buttons;
var form = el && el.form;
if (form) {
buttons = form.elemainfoto;
for (var i=0, iLen=buttons.length; i<iLen; i++) {
// If a button is checked, return its value
if (buttons[i].checked) {
return buttons[i].value;
}
}
}
// Otherwise, try to check the first one and return undefined
buttons && buttons[0].checked;
}
you need to know how to use radio element. Id is unique in html page. you should assign same name for each radio element.
<input type="radio" name="elemainfoto" id="first" value="1" />
element 1
<input type="radio" name="elemainfoto" id="second" value="2" />
element 2
<input type="radio" name="elemainfotor" id="thrid" value="3" />
element 3
if you want to check the first radio button as default, set it in input tag attribute.
<input type="radio" name="elemainfoto" id="first" value="1" checked="true"/>
element 1
or you can do it with javascript also,
$("input:radio[name=elemainfoto]:first").attr('checked', true);
you can perform action for each radio button click, to know which item is checked
$(function(){
$('input[type="radio"]').click(function(){
if ($(this).is(':checked'))
{
alert($(this).val());
}
});
});
if you want to perform a separate action for each radio button, try this below code
$(function () {
$('input[type="radio"]').click(function () {
if ($(this).is(':checked')) {
if ($(this).val() == '1') alert('first radio element is checked');
if ($(this).val() == '2') alert('second radio element is checked');
if ($(this).val() == '3') alert('third radio element is checked');
}
});
});
SEE THIS FIDDLE DEMO
Instead of selecting the first one, I prefered to use null
const radio = document.querySelectorAll('.timescale');
let timescale;
if (radio.checked) {
timescale = $('input[name=timescale_radio_buttons]:checked').val()
} else timescale = null;
You can write it like this with less code
HTML
<input type="radio" name="elementinfoto" value="1" />
<input type="radio" name="elementinfoto" value="2" />
<input type="radio" name="elementinfoto" value="3" />
JavaScript
const fields = document.getElementsByName('elementinfoto');
const value = fields.filter(el => el.checked).shift()?.value || null;
if(!value) {
fields.shift().checked = true;
}
You can replace the function shift() by [0] to get the first element if you prefer
How i put validation on check box?
Here is my code:
<script>
function Validate(){
var cntct = document.getElementById("contact").value;
if (cntct.value=="")
{
alert("Please select contact medium");
return false;
}
}
</script>
<input type="radio" name="contact" id="contact" value="SMS">
<label>SMS</label> <input type="radio" name="contact" id="contact" value="CALL">
<label>CALL</label> <input type="radio" name="contact" id="contact" value="EMAIL">
<label>EMAIL</label>
please help..
in case of checkboxes and radiobuttons, the element is checked when the "checked" property is true:
function Validate(){
var selectedValue = "";
var cntct = document.getElementsByname("contact");
for(var i=0;i<cntct.length;i++) {
if (cntct[i].checked)
{
selectedValue = cntct.value;
}
}
if(selectedValue == "") {
alert("Please select contact medium");
return false;
}
return true;
}
UPDATE
I just noticed that you have multiple elements with the same ID. This is not allowed, in such case the browser will return only the last element with that ID. You need to iterate over the elements with the same name and pick one with attribute checked. See the code above
Simple:
if(cntct == "")
{
}
The cntct variable is the value!
How i put validation on check box?
I presume you mean "how do I make sure one of the radio buttons is checked when the form is submitted" (supposing there is a form you haven't shown).
The simple way is to make one checkbox selected by default, then you know that one will always be selected and you don't have to check, e.g.
<input type="radio" name="contact" value="CALL" checked>
<input type="radio" name="contact" value="EMAIL">
The other way is to loop over the radio buttons when the form is submitted (or whatever event you decide to base the validation on) and make sure one is checked. e.g.
function checkButton() {
var nodes = document.getElementsByName('contact');
for (var i=0, iLen=nodes.length; i<iLen; i++) {
// If find a checked one, job's done
if (nodes[i].checked) return true;
}
// Otherwise, none were checked
return false;
}
There is an input type text with a name of contact, but it won't have a checked property so will be treated like an unchecked radio.
Please try this:
<script>
function SubmitIt()
{
if (document.forms.myform.elements.contact.value == "")
{
alert("Please select contact medium...");
}
}
</script>
<form name="myform" id="myform">
<input type="radio" name="contact" id="contact" value="SMS">
<label>SMS</label> <input type="radio" name="contact" id="contact" value="CALL">
<label>CALL</label> <input type="radio" name="contact" id="contact" value="EMAIL">
<label>EMAIL</label>
<button onclick="SubmitIt();">Submit</button>
</form>
I have a form full of checkboxes and I would like to disable the form if a certain boxed is checked. I will have this appear multiple times on my site and I was wondering if there is a better way than what I'm currently trying (which isn't working). If I want to use this same disable function multiple times, should I create a class 'disable'? Thanks!
JS
$(document).ready(function()
{
$('#disabler_0').click(function()
{
$('[name*=form1]').attr('disabled', 'disabled')
});
});
html
<form id="form1" name="form1" method="post" action="">
<p>
<label>
<input type="checkbox" name="disabler" value="one" id="disabler_0" />
one</label>
<br />
<label>
<input type="checkbox" name="disabler" value="two" id="disabler_1" />
two</label>
<br />
<label>
<input type="checkbox" name="disabler" value="three" id="disabler_2" />
three</label>
<br />
<label>
<input type="checkbox" name="disabler" value="four" id="disabler_3" />
four</label>
<br />
<label>
<input type="checkbox" name="disabler" value="five" id="disabler_4" />
five</label>
<br />
</p>
</form>
I wasn't able to disable a whole form, but every inner element on it:
There's a dummy updated example here:
http://jsfiddle.net/marcosfromero/S2SxN/
Updated
The code should be adapted to your needs and turn it more usable because once you disabled the whole form, you can't enable it again:
$('#disabler_0').click(function() {
var elements = $(this).closest('form').find('input, select textarea').not('#disabler_0');
if(this.checked) {
elements.attr('disabled', 'disabled');
} else {
elements.removeAttr('disabled');
}
});
Okay then, based on your response:
$(document).ready(function()
{
$('#disabler_0').click(function()
{
$('#form1 input[type="checkbox"]').not("#disabler_0").attr('disabled', 'disabled')
});
});
This will disable all input elements of type checkbox that are children of the form.
You cannot actually disable a form, the disable attribute is only used for inputs. What you want to do is something like this:
$("#form1").live("submit", function() {
if ($("#disabler_0").is(":checked"))
return false;
return true;
});
This will not let the form submit when the check-box is checked.
Edit for the comment clarification, this will disable all the inputs and selects when the check-box is selected.
$('#disabler_0').live("click", function() {
var form = $(this).parents("form");
var inputs = $("input,select,textarea", form);
inputs.attr("disabled", "disabled");
});
this can be improvment:
$(function() {
$('.disabler').click(function() {
$(this).parent('form').attr('disabled', 'disabled');
});
});
by this code you dont need modify code for each form
You could put a class on all of the checkboxes that you want to disable the form and use this code:
$('input.disabler').click(function() {
var form = $(this).closest('form');
var isChecked = $(this).is(':checked');
form.toggleClass('disabled', isChecked);
if (isChecked)
form.find(':input').attr('disabled', 'disabled')
});
$('#form1').bind('submit', function() {
if ($(this).hasClass('disabled'))
return false;
});
I have the following HTML form which can have many checkboxes. When the submit button is clicked, I want the user to get a javascript alert to check at least one checkbox if none are checked. Is there an easy way to do this using jQuery?
<form name = "frmTest" id="frmTest">
<input type="checkbox" value="true" checked="true" name="chk[120]">
<input type="checkbox" value="true" checked="true" name="chk[128]">
<input type="checkbox" name="chk[130]">
<input type="checkbox" name="chk[143]">
<input type="submit" name="btnsubmit" value="Submit">
</form>
if(jQuery('#frmTest input[type=checkbox]:checked').length) { … }
$('#frmTest input:checked').length > 0
$("#frmTest").submit(function(){
var checked = $("#frmText input:checked").length > 0;
if (!checked){
alert("Please check at least one checkbox");
return false;
}
});
$("#show").click(function() {
var count_checked = $("[name='chk[]']:checked").length; // count the checked rows
if(count_checked == 0)
{
alert("Please select any record to delete.");
return false;
}
if(count_checked == 1) {
alert("Record Selected:"+count_checked);
} else {
alert("Record Selected:"+count_checked);
}
});
$('#fm_submit').submit(function(e){
e.preventDefault();
var ck_box = $('input[type="checkbox"]:checked').length;
// return in firefox or chrome console
// the number of checkbox checked
console.log(ck_box);
if(ck_box > 0){
alert(ck_box);
}
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<form name = "frmTest[]" id="fm_submit">
<input type="checkbox" value="true" checked="true" >
<input type="checkbox" value="true" checked="true" >
<input type="checkbox" >
<input type="checkbox" >
<input type="submit" id="fm_submit" name="fm_submit" value="Submit">
</form>
<div class="container"></div>
$('#frmTest').submit(function(){
if(!$('#frmTest input[type="checkbox"]').is(':checked')){
alert("Please check at least one.");
return false;
}
});
is(':checked') will return true if at least one or more of the checkboxes are checked.